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Search results with tag "Draft method 1633"
Draft Method 1633 Analysis of Per- and Polyfluoroalkyl …
www.epa.govDraft Method 1633 - subject to revision 3 August 2021 . with tap water prior to sonicating in methanolic ammonium hydroxide (1%) and air drying. When in use, after loading the samples but prior to elution procedures, the chamber must be rinsed …