*ASTM D5441 MtBE Resolution Test Mix, 1.0 % w/w in MtBE, 5 mL 6990-Disinfection By˗products This Certified Reference Material at

This Certified Reference Material at a concentration of 10 µg/g in Isooctane:Toluene (75:25) is composed of a single analyte

This Certified Reference Material of varied concentration in Isooctane is composed of 3 analytes

This Certified Reference Material at a concentration of 50 µg/mL in Isooctane is composed of a single analyte

0 µg/mL in Isooctane is composed of 13 analytes

25 mg/mL in Methanol is composed of 5 analytes

*ASTM D5441 MtBE Resolution Test Mix, 1.0 % w/w in MtBE, 5 mL 6990-Disinfection By˗products This Certified Reference Material atThis Certified Reference Material at a concentration of 1. 0 % w w in MtBE is composed of 3 analytes. It is supplied in a unit of 5 mL and should be stored at an ambient temperature of greater than 5 C.