In order to obtain meaningful analytical data, sample preservation techniques must be effective from the time of sample collection to the time of analysis. A laboratory must confirm that sample integrity is maintained throughout maximum time periods between sample collection and analysis. In many cases, it is useful to know the maximum holding time. An evaluation of holding time is useful also in judging the efficacy of various preservation techniques.
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Standard Practice for Estimation of Holding Time for Water Samples Containing Organic and Inorganic Constituents
ASTM International , 10/15/2018
Pages: 6
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