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Overview EN ISO 54321:2021 - published by CEN and identical to ISO 54321:2020 - specifies standardized procedures for the digestion of aqua regia soluble fractions of elements in soil, treated biowas…
What is ISO 54321 about? Aqua regia, the yellow-orange fuming liquid, can dissolve metals like gold and platinum. ISO 54321 specifies two methods for digestion of soil, treated biowaste, sludge and w…
1 Scope This International Standard specifies requirements, methods of sampling and methods of test for wet blue leather produced from sheep skins tanned without wool and with the use of basic chromi…
Overview ISO 5432:2022 is an international standard specifying the requirements, sampling methods, and testing procedures for wet blue leather produced from sheep skins. This leather is tanned primar…
Overview ISO 54321:2020 defines standardized procedures for the aqua regia digestion of solid environmental matrices - soil, treated biowaste, sludge and waste - to extract the aqua regia soluble fra…