Sulfite (SO32-),1000µg/mL in Water, 3 x 20ml

Hexavalent Chromium (Cr+6), 10mg/mL in H2O, 500ml

2,3',4',5',6-Pentachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 74472-39-2

1H,1H,2H,2H-Perfluorododecan-1-ol, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 865-86-1