Continuing Calibration Verification Standard (CCV)

3,3',4,4'-Tetrabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

2,4-Dihydroxybenzophenone, 1000mg

Chloroparaffin C10-C13 55,5% Cl, 100μg/ml in Cyclohexane, 1ml