pH 1.0 Standard @ 25°C

2,2',3,3',4,4',5',6-Octachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 42740-50-1

Terbufos sulfone, 1000µg/ml in MeOH, 1ml

Lead (Pb)