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ISO 1689:1976
M00010456
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ISO 1689:1976 Sodium and potassium silicates for industrial use -- Calculation of the ratio : silicon dioxide/sodium oxide or silicon dioxide/potassium oxide
standard by International Organization for Standardization, 02/01/1976
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Full Description
The document specifies the formula for the calculation. In this ratio, only sodium oxide and potassium oxide combined in the form of silicates is considered. Replaces ISO Recommendation R 1689-1970.