DNPH - Mix 4, 100µg/ml in Acetonitrile, 5ml

Formothion, 10.0 µg/ml, Ethyl acetate, 10ml

o-Xylene-d10, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 56004-61-6

Vanillic acid, 100mg