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Bio­de­grad­a­bi­li­ty - for a ho­lis­tic view of sus­tain­a­bi­li­ty.

What happens at a product's end of its life?

A holistic view of sustainability focuses not only on manufacturing and safety, but also on the end of the product life cycle and its impact. If it isn't reused, recycled or upcycled in some way, textiles often end up in a landfill or compost, affecting the surrounding soil and water systems.

Take control of your impact.

Biodegradation (biodegradability) Testing

Turn the end into a new beginning.

To ensure that products are biodegradable and do not leach toxins into the environment, Hohenstein developed a test specifically for textile products.

Hohenstein's biodegradation tests use controlled soil burial over a defined test period. This method is based on international standards that determine the decomposition and degradation behavior of materials.

The results allow you to determine the decay process and environmental impact of a textile while transparently demonstrating that you have considered its entire life cycle.

Textile Biodegradability Test Method

ISO - Basis Test Methods

Customized testing based on standardized methods.

The Hohenstein test method was developed in accordance with the following standards:

  • DIN EN ISO 11721-1: Textiles - Determination of resistance of cellulose containing textiles to micro-organisms - Soil burial test - Part 1: Assessment of rot-retardant finishing
  • DIN EN ISO 846: Plastics - Evaluation of the action of microorganisms on plastics
What We Test

Product and Impact Assessments

  • The mass loss of the textile:
    Examining the the decay process of a product by micro-organisms like fungi and bacteria in combination with oxygen in the soil
  • The ecotoxicological safety of the textile:
    Determining the impact to the environment with cress and earthworm tests
Applications

Biodegradability tests are used in sourcing, product development, claim verification and quality assurance.

by textile manufacturers, finishers, brands and retailers
  • Objective measurement of biodegradability in soil
  • Verification of marketing claims
  • Product optimization and sourcing based on data
  • Labeling of biodegradable textile products with a Hohenstein Quality Label (B2C) or Hohenstein certificate (B2B)
  • Determination of product's risk to the environment
  • Advice on the disposal/recycling of products
  • Quality assurance based on ecotoxicological considerations
How We Test

Controlled Conditions

Both test protocols take place under standardized conditions.

1. Lab Testing

Biodegradation in Laboratory

Under defined laboratory conditions

Testing is conducted with incubation in standardized test containers under constant climatic conditions

2. Soil Testing

Biodegradation in Soil

Under practical outdoor conditions (exposed to the climate)

In standardized soil tests, under aerobic conditions, the biological activity is monitored using a reference sample.

Sampling and sample cleaning are carried out after three defined excavation dates (these can be set based on the product).

After a specified test period, the test samples are evaluated for degradation rate based on the mass loss.

We check the environmental compatibility or environmental pollution caused by the product's degradation with ecotoxicological tests and can optional chemical analysis.

Hohenstein Quality Label

3rd party claim support for biodegradable textiles and products.

USE HOHENSTEIN'S REPUTATION

Meet Dr. Marina Handel.

Contact
Ben Mead
Managing Director
Hohenstein Americas