Metformin-d6-HCl, 100μg/ml in MeOH, 5ml

Dibenzothiophene in Xylene Units: 5x1mL ampoule, 1x10mL screw cap bottle Chiron No. (Matrix) Concentration Isooctane Xylene White oil 3 cst µgS/g (ppm) Wt.% S-4055-0-IO S-4054-0-XY S

Aroclor Standard

2,4,4,5-Tetrachlorobiphenyl (BZ-74)