*Internal Standard Mix 2, 2.0 mg/mL in MeOH, 1 mL 6983-Proficiency Testing This Certified Reference Material at

This Certified Reference Material at a concentration of 100 µg/mL in Acetone is composed of 19 analytes

This Certified Reference Material at a concentration of 1000 µg/g in n-Dodecane is composed of a single analyte

The formulations each provide an abundance of peptides and peptones

This Certified Reference Material at a concentration of 2000 µg/mL in CH2Cl2 is composed of 14 analytes

This Certified Reference Material at a concentration of 1000 µg/mL in Hexane:Dichloromethane (85:15) is composed of 11 analytes

*Internal Standard Mix 2, 2.0 mg/mL in MeOH, 1 mL 6983-Proficiency Testing This Certified Reference Material atThis Certified Reference Material at a concentration of 2. 0 mg mL in Methanol is composed of 3 analytes. It is supplied in a unit of 1 mL and should be stored at an ambient temperature of greater than 5 C.