*EPA Method 521 Internal Standard Stock Solution, 1000 µg/mL in Methylene chloride, CAS # 93951-96-3, 5 x 1 mL TPH This Certified Reference Material at

This Certified Reference Material at a concentration of 2 µg/mL in Methanol:Water (95:5) is composed of 25 analytes

This Certified Reference Material at a concentration of 300 µg/mL in Methanol is composed of a single analyte

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

This Certified Reference Material of varied concentration in Isooctane is composed of 14 analytes

*EPA Method 521 Internal Standard Stock Solution, 1000 µg/mL in Methylene chloride, CAS # 93951-96-3, 5 x 1 mL TPH This Certified Reference Material atThis Certified Reference Material at a concentration of 1000 g mL in Methylene chloride is composed of a single analyte. It is supplied in a unit of 5 x 1 mL and should be stored in the freezer at less than 10 C.