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Overview EN ISO 20137:2023 - Leather: Chemical tests - Guidelines for testing critical chemicals in leather is a CEN-adopted ISO standard that provides curated lists of chemicals known to be present…
EN ISO 20130:2020 - Overview EN ISO 20130:2020 (ISO 20130:2018) is a CEN-adopted international standard for assessing soil quality by measuring patterns of enzyme activity in soil samples. The method…
Overview EN ISO 20136:2020 - Leather: Determination of degradability by micro‑organisms defines a laboratory test method to quantify the aerobic biodegradability of hides and skins (tanned or untanne…
1 Scope This document gives guidelines to apply the available chemical test methods for leather. This information can be used by those involved in setting specifications for leather, especially for t…
Overview ISO 20138-2:2019 defines general algorithms for calculating braking performance of railway rolling stock using a step‑by‑step (time‑integration) method. The standard specifies methodologies…
Overview ISO 20130:2018 - "Soil quality - Measurement of enzyme activity patterns in soil samples using colorimetric substrates in micro‑well plates" - specifies a laboratory method to measure multip…
Overview - ISO 20138-1:2018 (Railway braking performance) ISO 20138-1:2018 establishes general algorithms for calculation of braking performance of railway rolling stock using mean-value inputs. It c…
Overview ISO 20136:2020 - Leather: Determination of degradability by micro-organisms describes a laboratory test method for measuring the aerobic biodegradation of animal hides, skins and leathers (t…
Overview ISO/TR 22131:2023 - "Railway applications - Railway braking - Country specific applications for ISO 20138-1" is a Technical Report that supplements ISO 20138-1 by documenting national calcul…
Overview ISO 20137:2023 - Leather - Chemical tests - Guidelines for testing critical chemicals in leather provides practical guidance and curated lists of chemicals known to occur in leather and expl…