Phenylarsine oxide Standard

Tris(2-butoxyethyl) phosphate, 50µg/ml in Toluene, 1,2ml

2-Phenylbenzimidazole-5-sulfonic acid, neat, Solvent-neat, Unit 10MG, # of units-16, Cas.no. 27503-81-7

Hexachlorobenzene (HCB), 100µg/ml in CY, 5ml