ISO 5400:1984, Leather -- Determination of total silicon content -- Reduced molybdosilicate spectrometric method

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. This title may contain less than 24 pages of technical content.