Total Residual Free Chlorine (Cl)

1,2,3,8,9-Pentachloro(13C12)dibenzofuran, 1.2mL x 50ug/mL, toluene

Naphtho[2,3-k]fluoranthene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 207-18-1

Sulfadoxine, 100 µg/ml, Methanol, 1ml