Standards are packaged at a concentration of 2500 µg/mL (except 2000 µg/mL for 502.2 calibration mixes and system performance check mix) in purge-and-trap-grade methanol at a concentration in 1 mL ampoules.

• Contents of 502.2 Calibration Mixture No. 1: Bromomethane, Chloromethane, Chloroethane, Dichlorodifluoromethane, Trichlorofluoromethane, Vinyl Chloride.

Each standard includes an ampoule breaker, deactivated amber screw-top vial, extra product label, Certificate of Analysis, and Material Safety Data Sheet (MSDS).