Endosulfan-sulfate, 100 µg/ml, Cyclohexane, 1ml

Alkalinity as Calcium Carbonate, 1000µg/ml in Water, 100ml

Brilliant Black PN (E 151), 1g

1,4,5-Trimethylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2131-41-1