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Overview ISO 456:1973 - "Surface active agents - Analysis of soaps - Determination of free caustic alkali" specifies two validated laboratory methods for measuring free caustic alkali in commercial s…
Overview ISO 4561:2023 - Wood raw parquets elements - Classification - defines the international classification, by quality, of raw parquet elements used to manufacture strips for parquet flooring. I…
1 Scope This document establishes the classification, by quality, of raw parquet elements intended for the manufacture of strips for different types of parquet floorings of the following wood species…