Ethylene thiourea, 100 µg/ml, Acetonitrile, 1ml

Reagent kit for 100 tests (pH and free & total chlorine) Contains: 1 x 20 mL DPD1, 1 x 20 mL DPD2, 1 x 20mL DPD3, 1 x 20mL pH3

Triphenyltin-d15 chloride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 358731-94-9

2,2',3,3',4,6-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,