Total Residual Free Chlorine (Cl) Back Catalog number: 54124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9840.4-100-AN N-Nitrosopiperazine-d8, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1330180-56-7 Price on request 73529 S-Metolachlor Metabolite CGA 50720 Price on request 9948.4-100-AN N-Nitrosodiethanolamine-d8, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1173019-53-8 Price on request