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Overview ISO 21438-1:2022 - "Workplace atmospheres - Determination of inorganic acids by ion chromatography - Part 1: Non-volatile acids (sulfuric acid and phosphoric acid)" specifies a validated met…
Overview ISO 21438-3:2010 specifies a validated laboratory and field method for measuring the time-weighted average (TWA) concentration of hydrofluoric acid (HF) and soluble particulate fluorides in…
Overview ISO 21438-2:2024 is an international standard developed by the International Organization for Standardization (ISO) that specifies a reliable method for determining the time-weighted average…
Overview ISO 21438-3:2026 outlines a standardized method for determining the time-weighted average mass concentrations of soluble particulate fluorides and hydrofluoric acid (HF) in workplace air. Us…
1 Scope This part of ISO 21438 specifies a method for the determination of the time-weighted average mass concentration of hydrogen chloride (HCl) gas and hydrochloric acid mist, hydrogen bromide (HB…
1 Scope This part of ISO 21438 specifies a method for the determination of the time-weighted average mass concentration of soluble particulate fluorides and hydrofluoric acid (HF) in workplace air by…
1 Scope This part of ISO 21438 specifies a method for the determination of the time-weighted average mass concentration of sulfuric acid and phosphoric acid in workplace air by ion chromatography. Th…