Phenacetin,1000 µg/mL,acetonitrile,1mL,

USGS 8022 Standard

Reagent kit for 100 tests (Ammonia MR) Contains: 1 x 20mL NH3-1, 1 x 21mL NH3-2

3,4,4',5-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 70362-50-4