Disulfoton, 100 µg/ml, Acetonitrile, 5ml

Nicotinic acid, Stock solution system check EN12260, 1000µg/mL, Solvent-water, Unit 75mL, # of units-1, Cas.no. 59-67-6

Perfluoro([5-methoxy-1,3-dioxolan-4-yl]oxy)acetic acid (C6O4), 1.2ml x 50ug/ml, methanol

Pyruvic aldehyde