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Test methods for evaluating degradation of characteristics of cleanable filter media.

Sodium and potassium silicates for industrial use — Calculation of the ratio : silicon dioxide/sodium oxide o…

Overview ISO 1689:1976 is an international standard that provides the formula for calculating the ratio of silicon dioxide (SiO₂) to sodium oxide (Na₂O) or potassium oxide (K₂O) in sodium and potassi…

Test methods for evaluating degradation of characteristics of cleanable filter media

Overview ISO 16891:2016 - Test methods for evaluating degradation of characteristics of cleanable filter media - provides a standardized laboratory method to assess the relative degradation of cleana…