Pesticides - Mix 2, 100µg/ml in Water, 5ml

4-Amino-2´,3-dimethylazobenzene, certified, 0.25g

Metformin hydrochloride, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1115-70-4

EPA Method 8260B Purgeable Internal Standard