Silica (SiO2), 1000µg/ml in Water/0.5% NaOH, 100ml

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

2,2',3,4,4',5,6'-Heptachloro-3'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

Heptachlor-exo-epoxide (cis-), 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 28044-83-9