Monocrotophos, 100 µg/ml, Ethyl acetate, 5ml

2-Methyl-2-butene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 513-35-9

Sulfite (SO32-),1000µg/mL in Water, 3 x 20ml

1,1-Dichloroethene, 20mg/ml in MeOH, 1ml