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

Vamidothion, certified, 0.1g

2-Methyl-2-(methylnitrosamino)-1-propanol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 27646-81-7

Aflatoxin B2, 0.5 µg/ml, Solvent-acetonitrile, Unit 5mL, # of units-1, Cas.no. 7220-81-7