*Quality Control Sample Methyl Derivatives, Varied conc. in MtBE, 1 mL 12250-Environmental This Certified Reference Material at

This Certified Reference Material at a concentration of 10 µg/mL in Acetonitrile is composed of 8 analytes

The media are buffered at pH 7

Sonicate before use

This Certified Reference Material at a concentration of 100 µg/mL in Methanol is composed of 8 analytes

This Certified Reference Material in a matrix of Hexane:Cyclohexane (50:50) is composed of 2 analytes

*Quality Control Sample Methyl Derivatives, Varied conc. in MtBE, 1 mL 12250-Environmental This Certified Reference Material atThis Certified Reference Material of varied concentration in MtBE is composed of 16 analytes. It is supplied in a unit of 1 mL and should be stored refrigerated at 0 5 C.