- Classification of the fiber discharge during the washing process
- Verification of the fiber residue's biodegradability in wastewater (DIN EN ISO 14851)
- Determination of the degree of degradation within a defined period of time
- Determination of the toxicity of the fiber residues (DIN EN ISO 20079:2006-12) after the biodegradation process
DIN SPEC 4872 is a standardized test method for determining and classifying the environmental impact of textiles during washing. The test method examines how many fibers are discharged when textiles are washed, how well these fibers degrade in wastewater and how harmful the fiber residues are to the environment.
Once the test has been completed, we assign a classification code, which reflects the degree of fiber discharge, the biodegradation rate and the ecotoxicological potential of the textile product.
- Objective measurement of fiber discharge during washing, biodegradability and the ecotoxicological potential of fiber residues
- Expert and independent evaluation, comparison and improvement of your textile products
- Determination of the environmental benefits and risks of products for claim verification, sourcing, quality control and product development
Using analytical methods, we quantify:
- Fiber release behavior from different textile surfaces
- Fiber content in processes
- Fiber content in wastewater
- Quantification of fiber release and fiber length distribution with the Hohenstein method: Dynamic Image Analysis (DIA)
- Gravimetric measurement of total abrasion by filtration according to the University of Leeds/Microfiber Consortium (UoL/TMC) method or AATCC TM212
- Analyses of textiles and wastewater (various sample types from a single source)
- Determination of amount, type and shape of released fibers
- Objective measurement of fiber release
- Quality control of wastewater
- Optimization of processes and processing steps
In considering the environmental impact of textiles, there’s no way around microplastics. Hohenstein has been at the forefront of this research since 2016.
Along with the University of Leeds and other textile industry leaders, Hohenstein is a contributing research member of the Microfibre Consortium (TMC). We're working to minimize microplastic emissions from textiles and increase sustainability in textiles.