EPA Method 8070 - Nitrosamines

Metformin-d6 HCl, 1000µg/ml in MeOH, 1ml

2,3,3',4,4',5'-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 69782-90-7

tert-Butylhydroquinone, 250mg