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Pharmaceutical Reference Standards <
USP OVI Solvents
USP 467 Calibration Mix #6
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.
chloroform 60µg/mL
1,4-dioxane 380
methylene chloride 600
trichloroethene 80
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