Total Residual Free Chlorine (Cl)

N-Acetyl-S-(carbamoylethyl-d4)-L-cysteine , 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 81690-92-8 (unlabelled compound)

Arochlor 1016 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 12674-11-2

2-Butanone-2,4-DNPH, 100mg