EPA Method 601 - Purgeables Mix #2

4,4'-Difluorobiphenyl, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 398-23-2

Quinoclamine, 100 µg/ml, Acetonitrile, 5ml

(±)-trans-Hexahydrocannabinol, 1000µg/ml in MeOH, 1ml