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Reference Standards
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EPA 600 Series | Waste Water | Volatiles, SV, & Pest.
USP 467 Calibration Mixture #2
The Class 1 mixtures below reflect the requirements of USP23/NF18 effective January 1, 1995 to December 31, 1999. While these mixtures do not meet the current USP guidelines, many still use these mixtures to obtain a detectable benzene peak for the direct injection methods, Method I and Method V.
benzene 100µg/mL
chloroform 50
1,4-dioxane 100
methylene chloride 500
trichloroethene 100
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