The Hohenstein Quality Label - our test criteria

The Hohenstein Quality Label can be found on all types of clothing and textiles, on devices for private and commercial linen care as well as on cosmetic products. As a result of the scientifically proven and also real-life requirements, our quality label enjoys a high level of credibility with retail outlets and consumers and has a high level of awareness.

The prerequisite for receiving the Hohenstein Quality Label is compliance with defined minimum requirements relating to tested characteristics. The conditions of use for the quality label are regulated by a separate contract.

Consumers can use the Hohenstein Quality Label to be quickly and conveniently reassured about the particular quality of a product. Here you can learn more about the label and corresponding test.

Contact person

Ben
Mead
Phone:
+1 800 731 9468 102

Biologically effective

Antibacterial as per ASTM E 2149

Description:
To protect the product or minimise odour, textiles or articles for domestic use are finished with antibacterial agents. The antibacterial effect can prevent bacteria multiplying on the product and being distributed further by it.

To test:
The test sample is tested by the Hohenstein Laboratories in accordance with the American test standard ASTM E 2149 "Standard Test Method for Determining the Antimicrobial Activity of Antimicrobial Agents Under Dynamic Contact Conditions" for which there is accreditation from DAkkS. The quality label confirms that, in the preparation for the standard test, the test sample demonstrates antibacterial activity in response to the test germ Escherichia coli ATCC 25922 and also additional - not required in the standard - gram-positive test germ (usually Staphylococcus aureus ATCC 6538). The antibacterial activity of the test sample must be significant or strong against both test germs. The quality label is subject to a test report with detailed results.

Validity:
2 years

Products:

  • Products with silver finish
  • Products with an antimicrobial active finish (biocide)

Product data sheet to download
Antibacterial as per ASTM E 2149
Antibacterial as per DIN EN ISO 20743

Description:
To protect the product or minimise odour, textiles are finished with antibacterial agents. The antibacterial effect can prevent bacteria multiplying on or in the product and being distributed further by it.

To test:
The test sample is tested by the Hohenstein Laboratories in accordance with the standard DIN EN ISO 20743 "Textiles – Determination of antibacterial activity of textile products" for which there is accreditation with the DAkkS. The quality label confirms that, in the preparation for the standard test, the test sample demonstrates antibacterial activity in response to the test germs Staphylococcus aureus ATCC 6538 and Klebsiella pneumoniae ATCC 4352. The quality label is subject to a test report with detailed results.

Validity:
2 years
Certified products can be viewed under the following link:
http://www.hohenstein.de/de/certification/certified_products/certified_products.xhtml

Products:

  • Textiles with silver finish
  • Textiles with an anti-microbial active finish (biocide)

Product data sheet to download
Antimicrobial Activity
Antibacterial as per ISO 22196

Description:
To protect the product or minimise odour, surfaces and articles for domestic use are finished with antibacterial agents. The antibacterial effect can prevent bacteria multiplying on the product and being distributed further by it.

To test:
The test sample is tested by the Hohenstein Laboratories in accordance with the standard ISO 22196 "Plastics – Measurement of antibacterial activity on plastics surfaces" for which there is accreditation with the DAkkS. The quality label confirms that, in the preparation for the standard test, the test sample demonstrates antibacterial activity in response to the test germs Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739. The quality label is subject to a test report with detailed results.

Validity:
2 years
Certified products can be viewed under the following link:
http://www.hohenstein.de/de/certification/certified_products/certified_products.xhtml

Products:

  • Surfaces and articles for domestic use with silver finish
  • Surfaces and articles for domestic use with an active antibacterial finish (biocide)

Product data sheet to download
Antimicrobial Activity
Antibacterial & skin flora neutral

Description:
Healthy human skin is heavily populated with micro-organisms which, as a natural component of the skin, perform an important barrier function for the skin. If the antibacterial textiles are too effective, critics see a possible negative effect on this healthy human skin flora.

To test:
The practically oriented test is based on a standardised model of the human skin flora which simulates germ population, topography and environmental properties of healthy skin. To do this, the model uses germ types from the endogenous micro flora of the human epidermis. The effect of the test material on these germs is quantified during a wearing simulation on the artificial skin/skin flora over a contact period of 18 hours and then evaluated against internal controls or an identical material without antimicrobial finish. If no significant reduction in the number of germs occurs within the wear/exposure time, the textile is considered to be "safe" with regard to the effects on human skin flora.

The existence of supplementary testing for antibacterial effectiveness according to DIN EN ISO 20743 is a prerequisite for obtaining the label.

Validity:
2 years

Products:

  • Clothing with antimicrobial finish (e.g. silver)
  • Textiles worn close to the body
  • Sports clothing, underwear, wellness and functional textiles
  • Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons.

Antimicrobial

Description:
To protect the product from decomposition or minimise odour, textiles or articles for domestic use are finished with antimicrobial agents. The antimicrobial effect can prevent germs (bacteria, mould or viruses) that populate the product from multiplying and being distributed further by it.

Validity:
2 years
Certified products can be viewed under the following link: http://www.hohenstein.de/de/certification/certified_products/certified_products.xhtml

Products:

  • Products with silver finish
  • Products with an antimicrobial active finish (biocide)

To test:
The term antimicrobial is used if at least two of the three parameters (antibacterial/antimycotic/antiviral) are achieved. The quality label is based on one or more test reports with detailed results.

Antibacterial:
Test as per the standard DIN EN ISO 20743 "Textiles – Determination of antibacterial activity of textile products" with the test germs Staphylococcus aureus ATCC 6538 and also Klebsiella pneumoniae ATCC 4352 or standard ISO 22196 "Plastics - Measurement of antibacterial activity on plastics and other non-porous surfaces" with the test germs Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739. The antibacterial activity of the test sample must be significant or strong against both test germs.

Antimycotic:
Test as per standard DIN EN 14119 "Testing of textiles - Evaluation of the action of microfungi, process B2" or standard EN ISO 846 "Plastics -- Evaluation of the action of microorganisms on plastics, process B", each with the test germs Aspergillus niger ATCC 6275 and Chaetomium globosum ATCC 6205. The prevention of fungal growth must ≥50 % for both test germs.

Antiviral:
Test developed by Hohenstein in the suspension test (dependent on standards ISO 18184, DIN EN ISO 20743 or ISO 22196) with the non-enveloped test virus bacteriophage MS2 (ATCC 15597-B1) and a contact time of 18-24 hours. The antiviral activity of the test sample must be ≥4 log levels (significant).

The Hohenstein Laboratories have DAkkS accreditation for all above tests.

Product data sheet to download
Antimicrobial Activity
Antimycotic

Description:
To protect the product from decomposition, colour changes or unpleasant odours, textiles or articles for domestic use are finished with antimicrobial agents. The antimycotic effect can prevent germs that populate the product from multiplying on or in the product and from being distributed further by it.

To test:
The test sample is tested in accordance with the available material by the Hohenstein Laboratories as per standard DIN EN 14119 "Testing of textiles - Evaluation of the action of microfungi, process B2" or as per standard EN ISO 846 "Plastics - Evaluation of the action of microorganisms on plastics, process B" for which there is accreditation with the DAkkS. The quality label confirms that the test sample demonstrates antimycotic activity in response to the test germs Aspergillus niger ATCC 6275 and Chaetomium globosum ATCC 6205. The prevention of fungal growth must ≥ 50 % for both test germs. The quality label is subject to a test report with detailed results.

Validity:
2 years

Products:

  • Products with silver finish
  • Products with an antimicrobial active finish (biocide)

Product data sheet to download
Antimicrobial Activity
Antiviral

Description:
To protect the product from population with pathogens, textiles or articles for domestic use are finished with antimicrobial agents. The antibacterial effect can prevent infectious virus particles from contaminating the product and being distributed further by it.

To test:
The test sample is tested by Hohenstein Laboratories in a suspension test developed by Hohenstein (based on the standards ISO 18184, DIN EN ISO 20743 or ISO 22196) with the non-enveloped test virus Bacteriophage MS2 (ATCC 15597-B1) and a contact time of 18-24 hours for which there is accreditation with the DAkkS. The quality label confirms that the test sample demonstrates an antiviral activity of ≥ 4 log10 levels (significant) in response to the test virus MS2. The quality label is subject to a test report with detailed results.

Validity:
2 years

Products:

  • Products with silver finish
  • Products with an antimicrobial active finish (biocide)

Product data sheet to download
Antimicrobial Activity
House dust and dust mite barrier

Description:
Test of impermeability of bedding/casing to mite faeces - allergens with real mite faeces.

To test:
The impermeability of bedding or casings to mite faeces - allergens are tested with a special load test stand. To do this, the test samples are applied with a defined mite faeces - allergen quantity and a one-time load is simulated through pressure. The mite faeces allergen quantity which was able to penetrate through the test sample is then determined by means of an Enzyme Linked Immunosorbent Assay (ELISA). This test setup provides information about the impermeability of the test sample and thus the suitability of the product for persons with allergies. The quality label is subject to a test report with detailed results.

Validity:
2 years

Products:

  • Bedding materials
  • Casings

Product data sheet to download
Impermeability to mite dropping allergens
Odour reduction

Description:
The test evaluates the reduction characteristic of clothing on sweat odours in a real wearing situation. The test can be carried out with different variants depending on the task.

To test:
The practical experiment can prove the anti-sweat-odour effect from the viewpoint of the end user. The test samples are worn by a group of participants in the specific application type (sport, work). The strength of sweat odour on the samples is then assessed by trained odour testers and compared with the reference material with the help of an odour sampler. The quality label confirms that the reduction in sweat odour during a wearer trial could be proven when compared to a control material. The quality label is based on a test report with detailed results.

Validity:
2 years

Products:

  • Sport and outdoor clothing
  • Workwear
  • Body-contact clothing
  • Home textiles / seating furniture

Product data sheet to download
Sweat odour management
Effective against dust mites

Description:
The long-term test assesses the killing effect of textile finishes on the development of a population of house dust mites.

To test:
The review of effectiveness of textiles and finishes against house dust mites is carried out in accordance with standard NF G39-011. House dust mites (Dermatophagoides pteronyssinusauf) are applied to the test sample and controls and the quantity is determined after one week and after two population cycles (= 6 weeks) under optimum conditions. The number of living mites is determined with a hand count with the stereomagnifying glass.

For test samples that do not permit a hand count due to their structure, the allergen content (mite faeces allergen Der p1) is determined after 6 weeks. The quality label confirms that the mite count or allergen content in the test sample has been reduced by at least 90 % in comparison to the control material. The quality label is subject to a test report with detailed results.

Validity:
2 years

Products:

  • Textiles finished with agents that are directed against house dust mites.
  • Chemicals for spray application intended to kill house dust mites.

Product data sheet to download
Anti-mite-test

Biologically safe

Allergy friendly

Description:
In the cell culture test, immune cells ("sentry cells") are used to record the allergy potential (sensitising potention) of substances that can be released when wearing the test material. The sensitising test thus permits the assessment of an allergenic risk potential of tested substances. This is recorded as a total parameter. The test is not an analysis of the individual allergenic substances.

To test:
The sensitivity test is a screening test to prove an allergenic effect and is suitable as a pre-test to the standard DIN EN ISO 10993-10.

For the test, an extract of the test material is created and incubated with immune cells for 24 hours. The sensitising substances induce the cells to form surface markers to which the specific fluorescence-labelled antibodies are bound. The percentage part of positive cells is determined in the flow cytometer by means of the fluorescence-intensity. The quality label is subject to a test report with detailed results.

Validity:
1 year

Products:

  • Medical products of all materials
  • Clothes worn close to the body
  • Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons
  • Reclaimed textiles that are suspected to trigger allergies
  • Cosmeto-, wellness and functional textiles

Product data sheet to download

Product data sheet to download
Exclusion of a sensitizing/allergizing effect
Biodegradable

Description:
Assessment of the aerobic degradability of textile products over a defined test period by means of a controlled earth trench. Subsequent assessment of environmental compatibility through ecotoxicological investigations or chemical analysis (heavy metals).

To test:
The tests take place under
a) application-oriented outdoor conditions or
b) standardised laboratory conditions.

The tests are based on European and international standards that are used to test the decomposition behaviour of materials after being buried in the earth (e.g. EN ISO 11721, EN ISO 846 and DIN EN 13432).

Hohenstein tests the loss in mass after predefined excavation times and makes a visual assessment of the material surface. As standard, the ecotoxicological harmlessness is determined using an agro-toxicological test. In addition, further ecotoxicological tests and/or a heavy metal investigation of the soil samples can be carried out.

Validity:
2 years

Products:

  • Yarns, fibres, textile fabrics, clothing
  • Technical textiles e.g. for the automobile industry
  • Finished textiles
  • Recycled textiles

FAQ biodegradability

Skin friendly & allergy friendly

Description:
Combination of skin tolerance test and sensitivity test.

To test:
The test of skin tolerance (see here for details) is carried out in accordance with the protocol AW-QM-11.08.03.059 based on standard DIN EN ISO 10993-5. The Hohenstein Laboratories have DAkkS accreditation for this test.

The sensitivity test is a screening test to prove an allergenic effect and is suitable as a pre-test to the standard DIN EN ISO 10993-10 (for details, see under "Allergy Friendly"). The quality label confirms that the test sample has met the requirements of both tests. The quality label is based on two test reports with detailed results.

Validity:
2 years

Products:

  • Body-contact clothing, e.g. sports clothing, underwear
  • Wellness and functional textiles
  • Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons
  • Reclaimed textiles

Product data sheet to download
Exclusion of a sensitizing/allergizing effect
Skin friendly

Description:
In the cell culture test, skin cells are used to record the effects of cell-damaging substances (cytotoxins) that can be released when wearing the test material. The test thus enables the assessment of a potential risk of cell damage. This is recorded as a total parameter. The test is not an analysis of the individual cell-damaging substances.

To test:
The test of skin tolerance is carried out in accordance with the protocol AW-QM-11.08.03.059 based on standard DIN EN ISO 10993-5. The Hohenstein Laboratories have DAkkS accreditation for this test.

For the test an extract of the test material is produced which is cultivated over 24 hours with L929 skin cells in different concentrations. The viability of the cells and/or the potential cell-toxic effect of the test material is determined in a quantitive manner in comparison to control cultures. In doing this, a reduction in vitality of more than 30% in comparison to the extracting agent control is classified as a clear cell-damaging effect. The quality label is subject to a test report with detailed results.

Validity:
2 years

Products:

  • Body-contact clothing, e.g. sports clothing, underwear
  • Wellness and functional textiles
  • Textiles for sensitive persons such as those with allergies, small children, invalids and elderly persons
  • Reclaimed textiles

Product data sheet to download
Skin Compatibility Test

Electrostatic

ESD clothing

Description:
ESD (electrostatic discharge)-clothing must be anti-static to protect electronic components from damage. However, it must also be breathable to ensure a high level of wear comfort and not compromise the wearer's performance.

To test:
The electrostatic behaviour is tested with a resistance measuring device in accordance to DIN EN 61340-4-9 (point-to-point resistance).

The breathability is measured using the water vapour resistance with the thermo-regulation model for human skin (Skin Model) as per ISO 11092. In doing this, the water vapour resistance of the sample made available as the fabric layer is measured. The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.

Validity:
1 year

Products:
ESD clothing

Product data sheet to download

Product data sheet to download
ESD garments – breathable – antistatic

Feathers and down

Feathers and down

Description:
Test of the down and feather tightness in textiles and finished products.

To test:
Two test pillows with the defined dimensions are produced from the textile to be tested and the filling material. The pillows are subjected to a defined number of strokes and pillow movements in a leakage testing device. The number of down and/or feather parts that have passed through the textile after the end of the test are counted.

DIN EN 12132-1 Test of down-tightness of textiles
- Simulated pillow stress

DIN EN 12132-2 Test of down-tightness of textiles
- Shock test

Validity:
1 year

Products:

  • All types of down and feather beds and cushions
  • Clothing with down and feather fillings
  • Sleeping bags
  • Slippers

Domestic washing machines and detergents

Technology: Tested wool programme

Description:
TECHNOLOGY: TESTED WOOL PROGRAMME
Investigation of a special programme for drying wool or gentle drying for fine knits (specifically cashmere)

To test:
Quality label on the basis of the comparable product tests using the in-house methods.
The test textiles are washed and then drying either lying flat or in the tumble dryer using an appropriate special programme. After various frequent care treatments, the textiles are compared against both the new condition and also directly with each other with regard to their general appearance and the dimensional change.

Validity:
1 year

Products:

  • Dryer

Dryer drum: Design tested

Description:
Investigation of a special programme for gentle washing care for hot/coloured wash

To test:
Quality label on the basis of the comparable product tests using the in-house methods.
The test textiles are washed in comparable machines. After various frequent care treatments, the textiles were compared against both the new condition and also directly with each other with regard to their general appearance.

Validity:
5 years

Products:

  • Washing machine

Automatic 2-phase dosing system

Description:
Washing machines with automatic dosing system together with the necessary detergent components.

To test:
Quality label on the basis of the comparable product tests using the in-house methods.
Various primary and secondary washing effects (removal of stains, degree of whiteness, greying) while using the automatic dosing system and detergent from the manufacturer are compared with industry-standard market products and manual dosing. The accuracy of the automatic dosing system was also tested.

Validity:
2 years

Products:

  • Washing machine

Retention of breathability of functional clothing

Description:
Test of water vapour resistance after care treatment(s)

To test:
Quality label on the basis of the comparable product tests using the in-house methods.

Test textiles are treated with the corresponding products. After several care treatments, the water vapour resistance is measured to test whether there is a negative influence on the breathability.

Validity:
1 year

Products:

  • Fabric conditioner

Innovative technology

Innovative technology: Cooling Power

Description:
Neutral testing and assessment of innovative technologies in the textile branch in order to provide neutral support to the market launch and position of a technology leader.

The physical "cooling effect" of textile materials is measured with the WATson and is a measure of the evaporative cooling of a textile during sports activities (liquid sweat).

To test:
The measurement is carried out with the heat generation tester (WATson) in accordance with a validated Hohenstein method. In doing this, the physical evaporative cooling performance of sweat/water is measured in watts for the sample made available as the fabric layer. The physical cooling effect of different materials can be assessed in a comparative way and evaluated using the maximum achieved cooling performance for the current technology leader.

Validity:
1 year

Products:

  • Functional underwear
  • Sportswear
  • Cooling towels

Innovative technology: Odour and germ reduction

Description:
Innovative processes, machines or apparatus for preparing or treating products are developed to generate a specific added value against the current status of technology.

To test:
The quality label confirms that the technologies tested by the Hohenstein Laboratories are proven to be effective in an individual test design and that they have complied with the performance prescribed by the manufacturer. The quality label is subject to a test report with detailed results.

Validity:
5 years

Products:

  • Cleaning process/equipment
  • Processes, machines and equipment for the hygienic preparation or treatment of products

Innovative technology: Laundry machine technology

Description:
Neutral testing and assessment of innovative technologies in the laundry sector in order to provide support to the market launch.

To test:
After appropriate tests, the Hohenstein Institutes certify special technical features or innovative devices and methods for the care of textiles in industrial laundries and textile cleaning plants as well as materials that are treated through industrial cleaning. The focus here is on an improved process result and, specifically, the resource efficiency compared with the current status of technology.

Validity:
5 years

Products:

  • Process for commercial laundries and textile cleaning (plant)
  • Machines for commercial laundries and textile cleaning (plant)
  • Materials that can be prepared in commercial laundries

Product data sheet to download

Product data sheet to download
Testing and certifying innovative technologies

Climatic Comfort

Climatic Comfort

Description:
In the "climatic comfort" test, office chairs are tested with regard to their thermo-physiological and skin sensorial properties. Test values were determined in the research project ZIM-KF2136735CJ4.

To test:
The water vapour resistance is measured using a thermal manikin. Furthermore, the skin sensorial properties of the cover is determined with three different measuring values. The test determines whether the tested textile quickly feels damp (contact point number), whether it sticks to the damp skin (wet cling index) and whether a drop of sweat is quickly absorbed (sorption index). Experts from the Hohenstein Institute then derive an assessment from the results of the tests using limit values. The label can be granted with an assessment of "very good" and "good".

Validity:
2 years

Products:

  • Office chairs (seats must consist of a cover, upholstery material & seat cushion)

Product data sheet to download
Climatic comfort office chairs

Compression test

Compression and pressure profile

Description:
The pressure profile for compression stockings can be gradually increasing, gradually decreasing or remain constant. The definition of pressure and pressure profile is based on their characteristics and is the responsibility of the manufacturer. The Hohenstein Institutes test and confirm the manufacturer's data if related to this.

To test:
The pressure and pressure profile of compression stockings in the non-medical sector is measured in accordance with DIN 58133. Within the compression test, the pressure and pressure profile of compression stockings is measured using the test device HOSY. To do this, a sock is fixed in the measuring device and stretched to the specified extent. The compression is calculated from the determined force values that the textile exerts. If requested, the result is listed in the Hohenstein Quality Label "Compression and Pressure Profile".

Validity:
1 year

Products:

  • Sports socks
  • Travel socks
  • Wellness socks

Product data sheet to download

Nano technology

Nano technology

Description:
The test assesses whether the functionality of the textile is based on "nano-technology", that it is fit for purpose and whether there are possible biological risks.

To test:
The test of nano technology comprises:

  • the determination of the type of nano finish
  • the visual assessment of the nano finish using the scanning electron microscope
  • the quantifying of the finishing effects (e.g. dirt repellent through contact angle measurements of characteristic liquids, anti-microbial effect through Nano-Ag, UV protection through Nano-Ti/Nano-ZnO
  • the determination of mechanical fit for purpose
  • the determination of wash permanence and the determination of breathability and biocompatibility.

The test programme is tailored to the textile material and the application area of the textile. The test is carried out with the new condition textile and under realistic conditions.

Validity:
Infinitely or for as long as the article is produced

Products:
All textile materials (e.g. everyday textiles, textiles from the outdoor sector, workwear / industrial garments, accessories, furnishings etc.)

Product data sheet to download

Product data sheet to download
Testing of Nanotechnology for Textiles

Fit

Functional fit is suitable for material

Description:
The fit test determines the fit of clothing. The test determines whether it corresponds to the required ready-made size.

To test:
The assessment of fit is carried out by experienced clothing technicians at the Hohenstein Institute. The fit of an item of clothing is tested on persons whose body size corresponds to the required ready-made size. The test checks that the fit does not restrict the movement options of a person and the appearance and functionality of the textile.

Grading scale
The grade has to be "fits" to allow the Hohenstein Quality Label to be granted.
Fits = no defect in fit
There are no relevant fit defects which would compromise quality.

Validity:
1 year

Products:
All types of clothing

Product data sheet to download

Product data sheet to download
Hohenstein Quality Label "Fit"
Fit

Description:
The fit test determines the fit of clothing. The test determines whether it corresponds to the required ready-made size.

To test:
The assessment of fit is carried out by experienced clothing technicians at the Hohenstein Institute. The fit of an item of clothing is tested on persons whose body size corresponds to the required ready-made size. The test checks that the fit does not restrict the movement options of a person and the appearance and functionality of the textile.

Grading scale
The grade has to be "fits" to allow the Hohenstein Quality Label to be granted.
1.0 (very good)= fits = no defects in fit
There are no relevant fit defects which would compromise quality.

Validity:
escaping

Products:
All types of clothing

Sleeping comfort

Flammability of bedding

Description:
Classification in accordance with DIN EN 14533 - "Flammability of bedding"

To test:
The classification of the flammability of bedding is based on two sources of ignition. The flammability is tested using a smouldering cigarette (DIN EN ISO 12952-2) and with a small naked flame (DIN EN ISO 12952-4). The classification is class A, B or C.

Validity:
1 year

Products:
Bedding

Sleeping comfort rating and heat isolation (sleeping comfort of duvets)

Description:
The assessment system for duvets is used to classify the heat isolation and moisture management, as a person would experience with practical use of the duvet. Two graphics are attached to the investigation report and can be used to estimate the required heat insulation class. These help the retailer to advise the customer and the customer to select the correct duvet.

To test:
The effective heat insulation of the complete duvet is measured using a thermal manikin. The duvet is then assigned to one of three heat insulation classes. (1 * – particularly suitable for high temperatures, 2 ** – particularly suitable for moderate temperatures, 3 *** – particularly suitable for low temperatures). In addition, the Skin Model is used to measure the material-specific heat and water vapour resistance (breathability), the water vapour absorbency and the buffering capacity of water vapour (sweat absorption ability). Experts from the Hohenstein Institute use the results from the test to determine sleep comfort grades for warm and cold environmental climates. This grade can range from 1 "very good" to 4 "unsatisfactory".

Grading scale
The grade has to be at least 2.5 (good) to receive the Hohenstein Quality Label.

Validity:
1 year

Products:
Duvets for adults for fillings made of down, synthetic, or natural or synthetic fibres

Product data sheet to download

Product data sheet to download
Sleep Comfort of Duvets
Sleeping comfort grade (sleeping comfort of children's duvets)

Description:
The assessment system can classify the actual sleep comfort of children's duvets, as experienced in real-life use. The sleep comfort for children's duvets can be listed for warm and cold conditions.

To test:*
In addition, measurements with the Skin Model are used to measure the material-specific heat and water vapour resistance, the water vapour absorbency and the buffering capacity of water vapour.

The results of the assessment system delivers sleep comfort grades for warm and cold environmental climates. This grade can range from 1 "very good" to 4 "unsatisfactory".
The grade has to be at least 2.5 to receive the Hohenstein Quality Label.

* The effective heat insulation is measured using a thermal child manikin.

Validity:
1 year

Products:

  • Duvets for children (1 m x 1.35 m) with fillings of down, synthetic or natural fibres

Product data sheet to download

Sleeping comfort grade (sleeping comfort of children's mattresses)

Description:
The evaluation system is used for classifying the sleeping climate (heat and moisture management) of children's mattresses as perceived in practical use.

To test:
In addition, measurements with the Skin Model are used to measure the material-specific heat and water vapour resistance (breathability) and the water vapour absorbency. The drying procedure for children's mattresses is also determined.

The statements of the evaluation system provide a sleeping comfort grade characterising the thermo-physiological properties of the mattress. This grade can range from 1 ‘very good’ to 4 ‘unsatisfactory’. The grade has to be at least 2.5 (good) to receive the Hohenstein Quality Label.

Validity:
1 year

Products:

  • Bed mattresses for children
  • Mattress inserts for bassinets and carry bags

Product data sheet to download

Sleeping comfort grading for mattresses (sleeping comfort of mattresses)

Description:
The Hohenstein Institute assessment system is used for classifying the sleeping climate (moisture management) of mattresses as perceived in practical use. In addition, the ergonomic characteristics of mattresses are determined.

To test:
With the test procedure, the Skin Model is used to measure the material-specific water vapour resistance, in other words, the breathability, as well as the water vapour absorbency and release of the mattress. From an ergonomic perspective, the mattress characteristics such as point elasticity, bending elasticity, shoulder zone effect and body zone support are tested. From the test results, experts from the Hohenstein Institute determine the grade for climate comfort and ergonomic comfort. The grades can range from "very good" to "unsatisfactory". The grade has to be at least "good" to receive the Hohenstein Quality Label.

Validity:
2 years

Products:
Mattresses

Product data sheet to download
Sleep comfort of mattresses
Heat insulation (sleeping comfort of duvets)

Description:
With the assessment system for duvets, the heat insulation is classified as a person would experience with practical use of the duvet. Two graphics are attached to the investigation report and can be used to estimate the heat insulation class. These help the retailer to advise the customer and the customer to select the correct duvet.

To test:
The effective heat insulation of the complete duvet is measured using a thermal manikin. The duvet is then assigned to one of three heat insulation classes. (1 * – particularly suitable for high temperatures, 2 ** – particularly suitable for moderate temperatures, 3 *** – particularly suitable for low temperatures)

Validity:
2 years

Products:
Duvets for adults for fillings made of down, synthetic or natural fibres

Product data sheet to download

Product data sheet to download
Sleep Comfort of Duvets

Wear comfort

Breathability

Description:
The water vapour resistance ("thermo-regulation model") is measured using the Skin Model and is a measure of the transport of (vapourous) sweat through the textile.

To test:
The measurement is taken using the thermo-regulation model for human skin (Skin Model) in accordance with ISO 11092. In doing this, the water vapour resistance of the sample made available as the fabric layer is measured. The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.

Validity:
1 year

Products:
All materials that come into direct contact with the body

  • Finished or laminated textiles for outdoor clothing
  • Knitwear for functional wear and everyday wear, pullovers, workwear and protective clothing
  • Textiles for outerwear and bedding
  • Mattresses and mattress protectors (casings)
  • Duvets and pillows
  • Vehicle seats

Product data sheet to download

Product data sheet to download
Measurement of Water Vapour Resistance
Materials with a cooling effect

Description:
The physical "cooling effect" of textile materials is measured with the WATson and is a measure of the evaporative cooling of a textile during sports activities (liquid sweat).

To test:
The measurement is carried out with the heat generation tester (WATson) in accordance with a validated Hohenstein method. In doing this, the physical evaporative cooling performance of sweat/water is measured in watts for the sample made available as the fabric layer. The physical cooling effect of different materials can be assessed comparatively and evaluated using the maximum achieved cooling effect of the current technology leader.

Validity:
Unrestricted (if the certified article has the technology leader within it and is produced in an unchanged form)

Products:

  • Functional underwear
  • Sportswear
  • Cooling towels

Skin sensory comfort

Description:
This test determines the sensation of the textile on the skin. By using appropriate measurement analysis, these sensations can be presented in figures and therefore be compared.

To test:
Different measurements are used to evaluate the characteristics of a textile that influence the skin sensory comfort:

  • The wet cling index shows how strongly a textile sticks to skin that is dampened by sweat.
  • The sorption index describes how quickly a drop of sweat is absorbed by the textile.
  • The surface index comprises the hairiness or smoothness of a textile.
  • The number of contact points between the textile and skin specifies whether a textile feels scratchy or stiffness.
  • The stiffness is important for the smoothness of the textile on the body.
  • The water vapour permeability index describes, as a thermosphysiological component, the heat and moisture management that is also important for the sensation of the textile on the skin.

Validity:
1 year

Products:
All textiles that come into direct contact with the body, e.g.:

  • Underwear
  • T-Shirts
  • Pullovers
  • Bed linen
  • Socks and tights
  • Towels

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Outdoor labels for adults

Description:
The measurements quantify the characteristics of use for outdoor clothing.
The parameters "breathability", "water tightness" and "air permeability" (wind protection) are taken into account.

To test:
The water vapour resistance is measured using the thermoregulation model for human skin (Skin Model) as per ISO 11092 (on the fabric layer). The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.

The water tightness is measured for the surface and also the seams in accordance with DIN EN ISO 20811. The air permeability is measured in accordance with DIN EN ISO 9237.

Products:

  • Outdoor (rain) clothing
  • Coated textiles
  • 2 or 3-layer laminate

Validity:
1 year

Outdoor label for children

Description:
The measurements quantify the characteristics of use for children's outdoor clothing.
The parameters "breathability", "water tightness" and "air permeability" (wind protection) are taken into account. The durability can also be classified.

To test:
The water vapour resistance is measured using the thermoregulation model for human skin (Skin Model) as per ISO 11092. The basic investigations enable the assessment of the "breathability activity" of the different materials both as an absolute value and as a comparative value.
The water tightness is measured for the surface and also the seams in accordance with DIN EN ISO 20811. The air permeability is measured in accordance with DIN EN ISO 9237.
The durability is characterised by means of the textile technology tests for maximum force and scuff resistance.

Validity:
1 year

Products:

  • Outdoor (rain) clothing for children
  • Coated textiles
  • 2 or 3-layer laminate

Physiological comfort mark (physiological comfort of medical products)

Description:
When checking the physiological comfort of medical products such as bandages, orthoses etc., the microclimate between the product and the skin of the wearer is investigated. Test values were determined in the research project AiF no. 11283. Compliance with these values is necessary for registration in the catalogue of therapeutic appliances for the medical service.

To test:
The heat and moisture management of a bandage to be tested is determined using three test methods. These include the measurement of heat and water vapour resistance and the buffering capacity of water vapour using the Skin Model. The smoothness of the textile surfaces of the tested material is measured using the surface index, part of the skin sensory tests.

Grading scale
Grade 1.0 - 1.5 = very good
Grade 1.6 - 2.5 = good
Grade 2.6 - 3.5 = satisfactory
Grade 3.6 - 4.0 = inadequate

The grade can be between 1.0 (very good physiological comfort) and 4.0 (inadequate physiological comfort).
The grade has to be above 2.5 for a product to be allowed to bear the Hohenstein quality label.

Validity:
2 years

Products:

  • Medical bandages and orthotics pads
  • Sports bandages

Product data sheet to download

Product data sheet to download
Physiological Comfort of Bandages
Wear comfort rating

Description:
The physiological wear comfort of clothing is determined, on the one hand, through the heat and moisture management, which is measured with the Hohenstein Skin Model and, on the other hand, through the skin sensorial properties. The sensitivity is quantified by means of skin sensory tests which involve a textile coming into contact with the skin. The measurement results according to laboratory apparatus represent these sensitivities in figures, which can then be assessed both absolutely and comparatively.

To test:
The Hohenstein Skin Model for human skin (Skin Model; standardised as per DIN EN ISO 11092) determines the heat and moisture transport processes. Different strengths of sweat are simulated and corresponding parameters are defined (e.g. heat isolation, drying time). Different activity levels of the wearer and thus different sweat scenarios are taken into account and defined in accordance with corresponding parameters. The skin sensorial properties of a textile are determined with five different measuring values. For example, the test determines whether the tested textile quickly draws away sweat from the skin and feels pleasant to the skin. With the help of the test results for heat and moisture management and the skin sensory parameters, the wear comfort rating of the tested clothing can be calculated. The parameters and their weightings can be adjusted depending on the range of utility of the textile. Thus different evaluation formulae are used for sportswear than for everyday clothing.

Grading scale
Grade 1.0 - 1.5 = very good physiological comfort
Grade 1.6 - 2.5 = good physiological comfort
Grade 2.6 - 3.5 = satisfactory physiological comfort
Grade 3.6 - 4.0 = inadequate physiological comfort

The grade can be between 1.0 (very good wear comfort) and 4.0 (inadequate wear comfort).
The grade has to be above 2.5 for a product to be allowed to bear the Hohenstein quality label.

Validity:
1 years

Products:

  • Knitwear for functional wear and underwear, work and protective clothing, pullovers, T-shirts
  • Woven fabrics for work, protective and outerwear
  • Socks

Product data sheet to download

Product data sheet to download
Measurement of Wear Comfort
Wellness label

Description:
The tests are used to test the suitability of textiles for the wellness sector. Wellness textiles should feel pleasant on the skin and and retain their wellness characteristics after washing.

To test:
The skin sensorial properties of a textile are quantified (assessed) with five different measuring values. This includes, for example, whether the textile demonstrates a good surface structure and feels pleasant on the skin. Furthermore, the thermo-physiological characteristics are measured via heat and water vapour resistance with the thermo-regulation model for human skin (skin model; standardised as per DIN EN ISO 11092). The skin sensory wear comfort is then determined with the help of the measurement results. To receive the label, this must be at least "good" (< 2.5).

In addition, the colour-fastness as per ISO 105-B02, the dimensional stability after 20 care treatments and wash resistance must be tested. The suitability of the care instructions is determined using the results, and to receive the label, it must also be at least "good".

Validity:
1 year

Products:

  • Clothing textiles for the wellness sector
  • Dressing gowns
  • Towels

Product data sheet to download

Product data sheet to download
Tested Wellness Textile

UV protection and opacity

Opacity - clothing

Description:
The aim of the investigation is to assess the opacity of textiles.
The opacity of clothing is also tested using a pass/fail evaluation.

To test:
To determine the opacity, spectroscopic comparative measurements are taken with two different skin types and three contrast colours. The opacity of these results is calculated using these results.

The evaluation matrix determined with test persons is used to evaluate the opacity of an item of clothing with "accepted" or "not accepted" in the dry and wet state. The clothing is then declared as a "Pass" or "Fail".

Validity:
1 year

Products:

  • Textiles for clothing (e.g. blouses, shirts, T-shirts, swimwear)
  • Textiles for workwear / industrial garments for, for example, doctors, nursing staff (e.g. tunics), etc.

Opacity - technical textiles

Description:
This test process measures and evaluates the opacity of textiles.
The test provides information about the transparency of, for example, curtains, textile advertising objects, textiles for trade fair construction, decoration materials etc.
The degree of transparency of materials for trade fairs and advertising is categorised in 5 levels.

To test:
The opacity is determined through the spectroscopic calculation of contrast limits using a defined evaluation matrix.

The textile can be classified in five different categories "very transparent", "transparent", "slightly transparent", "nearly opaque" and "completely opaque".

Validity:
1 year

Products:

  • Curtains (however, without consideration of the drape)
  • Technical textiles for trade fairs, advertising textiles and decorative elements for textile design/construction

UV protection as per AATCC 183

Description:
With this standard, the UV protection factor (Ultraviolet Protection Factor, UPF) of textiles and similar materials (e.g. films) is determined in the new and dry condition without stress.

To test:
The UPF permits an evaluation of the UV protection of textiles with consideration of the spectral composition of sunlight and the skin sensitivity of the person.

The test is carried out in accordance with the American Standard ((AATCC TM 183), which uses the sun spectrum for Albuquerque (USA) and which corresponds to the sun radiation in Southern Europe.

The textiles are measured in an unstretched, dry new state. Depending on the calculated UPF, the UV protection is described as "good" (UPF 15, 20), "very good" (UPF 25, 30, 35) or "excellent" (UPF 40, 45, 50, 50+).

Validity:
1 year

Products:

  • Clothing textiles
  • Shading textiles (e.g. sunshades, blinds, roller blinds, foils)

UV protection as per AS/NZS 4399:1996

Description:
With these standards, the UV protection factor (Ultraviolet Protection Factor, UPF) for textiles and similar materials (e.g. foils) is determined in the new condition without stress.

To test:
The UPF permits an evaluation of the UV protection of textiles with consideration of the spectral composition of sunlight and the skin sensitivity of the person.

With the Australian/New Zealand standard (AS/NZS), the sun spectrum for Melbourne, Australia is used.

The textiles are measured in an unstretched new condition. Depending on the calculated UPF, the UV protection is described as "good" (UPF 15, 20), "very good" (UPF 25, 30, 35) or "excellent" (UPF 40, 45, 50, 50+).

Validity:
1 year

Products:

  • Clothing textiles
  • Shading textiles (e.g. sunshades, blinds, roller blinds, foils)

Product data sheet to download

Product data sheet to download
Textiles and UV Protection
UV protection as per EN 13758-1

Description:
With these standards, the UV protection factor (Ultraviolet Protection Factor, UPF) for textiles and similar materials (e.g. foils) is determined in the new condition without stress.

To test:
The UPF permits an evaluation of the UV protection of textiles with consideration of the spectral composition of sunlight and the skin sensitivity of the person.

The test is carried out in accordance with the European Standard (DIN EN 13758), which uses the sun spectrum for Albuquerque (USA) and which corresponds to the sun radiation in Southern Europe.

The textiles are measured in an unstretched new condition. Depending on the calculated UPF, the UV protection is described as "good" (UPF 15, 20), "very good" (UPF 25, 30, 35) or "excellent" (UPF 40, 45, 50, 50+).

Validity:
1 year

Products:

  • Clothing textiles
  • Shading textiles (e.g. sunshades, blinds, roller blinds, foils)

Product data sheet to download

Product data sheet to download
Product data sheet to download

Laundries

Suitable for leasing

Description:
Neutral evaluation for the purchase of leasing textiles or textiles that should be cleaned as per the conditions of industrial laundries and which should be usable for as long as possible.

To test:
The Hohenstein Quality Standard 701 ff defines the minimum requirements of leasing textiles with reference to:

  • Colour-fastness, mechanical characteristics and care characteristics of the textiles
  • Resistance of additions/components such as buttons and zip fasteners
  • Reprocessing capability in textile service operations
  • Fit of ready-made items of clothing (optional)
  • Wear comfort (optional)

The tests include laboratory tests and real wash treatments as per the conditions of the industrial laundries. There is also an opportunity to test individual components for resistance and then to make an item of clothing from individual tested components and have it certified.

Validity:
1 year

Products:

  • Workwear for hospitals, nursing homes, food processing businesses, hotels and industry
  • Terry towels and mattress covers
  • Shirts and blouses
  • T-shirts and polo shirts
  • Flat linen from hotels and hospitals (table linen, bedding)
  • Business clothing

Product data sheet to download

Product data sheet to download
Suitability of textiles for leasing