Formothion, 10.0 µg/ml, Cyclohexane, 10ml

p-Tolyl Sulfate Potassium Salt, 1g

S421, 100 µg/ml, Acetonitrile, 5ml

1,2,3,4,6,9-Hexachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane