ONORM EN ISO 11644:2023

Leather - Test for adhesion of finish (ISO 11644:2022)

This document determines a procedure for determining the adhesive strength of the coverage of the leather or the adhesive resistance between two striking layers of the attribution. The process is valid for all flexible leather with a smooth surface that can be glued to a carrier without the adhesive penetrating the cover. Preliminary tests may be necessary to clarify whether these conditions are met. This test method is to be applied for covered leather with a thick coating. The procedure specified in this document is not for pigment -free articles or articles without an averted coating, such as - Nubucel leather, - Anilin leather, - fat leather, - Veloursleder, - Perforated leather.

ISO 5402-1:2022

Leather - Determination of flex resistance - Part 1: Flexometer method

This document specifies a method for determining the dry or wet flex resistance of leather and finishes applied to leather. It is applicable to all types of flexible leather below 3,0 mm in thickness.

ASTM F696-24

Standard Specification for Leather Protectors for Rubber Insulating Gloves

1.1 This specification covers leather protector gloves and leather protector mittens to be worn over electrical workers' rubber insulating gloves and rubber insulating mittens. 1.2 It is intended that the gloves specified herein shall fit snugly and without undue wrinkles over rubber insulating gloves and rubber insulating mittens specified in Specification D120 . 1.3 The gloves of this specification are intended to prevent mechanical and thermal harm to rubber insulated gloves when working on live parts or conductors. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ISO 23702-1:2023

Leather - Per- and polyfluoroalkyl substances - Part 1: Determination of non-volatile compounds by extraction method using liquid chromatography

This document specifies a test method for detection and quantification of extractable non-volatile per- and polyfluoroalkyl substances (PFAS) in leather and coated leather by solvent extraction and liquid chromatography coupled with mass spectrometry. This document, taking into account the three-dimensional distribution of the fibres within leather, makes the evaluation of the PFAS with respect to the mass. PFAS substances categories and applications are listed in Annex A, Table A.1. Classes of PFAS regulated compounds listed in Annex B, Table B.1, include acids, telomers, sulfonates and sulphonamide alcohols. Classes of other non-regulated compounds that can be determined by this document are listed in Annex C, Table C.1. NOTE 1 By applying the method specified in this document, the concentration of free fluorotelomer alcohols (FTOH) in a sample cannot be correctly quantified if perfluoropolymers that release FTOH due to transesterification with the extraction solvent methanol are present in the sample. NOTE 2 Some regulations (e.g. Reference [4]) also restrict perfluoropolymers having a linear or branched perfluoroheptyl group with the moiety (C 7 F 15 )C as one of the structural elements that can degrade to PFOA, e.g. polymers containing 2-perfluorooctylethanol (8:2 FTOH, CAS Registry Number ® 678-39-7) bonded as esters. To determine whether these perfluoropolymers are intentionally present, it could be necessary to introduce an alkaline hydrolysis method to remove the 8:2 FTOH side-chain from the polymer. In addition, other FTOH, e.g. 6:2 FTOH or 10:2 FTOH, will be released from relevant perfluoropolymers by alkaline hydrolysis.

ASTM D4705-18(2023)

Standard Test Method for Stitch Tear Strength of Leather, Double Hole

1.1 This test method is intended for use in determining the stitch tearing resistance of leather using a double hole tear. It is particularly applicable to lightweight leathers. This test method does not apply to wet blue. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ISO 19071:2016

Leather - Chemical tests - Determination of chromium (VI) and the reductive potential for chromium tanning agents

ISO 19071:2016 specifies a test method for the determination of chromium (VI) content in chromium tanning agents. The results give information about the reductive potential of the chromium tanning agent.

ISO 4044:2017

Leather - Chemical tests - Preparation of chemical test samples

ISO 4044:2017 specifies how to prepare a test sample of leather for chemical analysis. The test sample can be either ground or cut into small pieces. Unless specified in this document, the method to be used depends on the size of leather sample available for testing.

ISO 18218-2:2019

Leather - Determination of ethoxylated alkylphenols - Part 2: Indirect method

This document specifies a method for determining alkylphenols (nonylphenol and octylphenol) and alkylphenol ethoxylates (nonylphenol ethoxylate and octylphenol ethoxylate) in leather and process auxiliaries. The analysis is based on high-performance liquid chromatography (HPLC) or gas chromatography-mass spectrometry (GC-MS).

The analysis of the alkylphenol ethoxylate is made by cleaving the alkylphenol ethoxylate and measuring the released alkylphenol.

NOTE ISO 18218-1 and this document use different solvents for the extraction of the ethoxylated alkylphenols from leather. Consequently, the two analytical methods are expected to give similar trends but not necessarily the same absolute result for the ethoxylated alkylphenol content in leather.

ISO 2418:2023

Leather - Chemical, physical, mechanical and fastness tests - Position and preparation of specimens for testing

This document specifies the position of laboratory test specimens within a piece of leather and the method of labelling and marking the laboratory test specimens for future identification. In addition, this document specifies the design of press knives for cutting test pieces and the preparation of test pieces. It is applicable to all types of leather derived from mammals, irrespective of the tanning used. It is not applicable to leathers derived from birds, fish, reptiles or furs.

ISO 17076-1:2020

Leather - Determination of abrasion resistance - Part 1: Taber® method

This document specifies a method of determining the abrasion resistance of leather using a Taber^® apparatus.