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ISO 5400:1984
M00002204
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ISO 5400:1984 Leather -- Determination of total silicon content -- Reduced molybdosilicate spectrometric method
standard by International Organization for Standardization, 03/01/1984
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Principle: oxydation of a test portion in a Parr bomb under alkaline conditions to destroy organic matter and to solubilize the mineral matter. Formation of molybdosilicate complex and spectrometric measurement at a wavelength of 630 nm.