ISO 17091:2013

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ISO 17091:2013 is an international standard that specifies a method for measuring the time-weighted average mass concentration of lithium hydroxide (LiOH), sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium dihydroxide [Ca(OH)2] in workplace air. It focuses on collecting particulate hydroxides on a filter and analyzing the filter to determine the hydroxide concentrations.