Methanol, 5ml

Chlorpyrifos, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 2921-88-2

4,4'-Difluorodiphenylmethane, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 457-68-1

alpha-Ketoglutaric acid