Total Residual Free Chlorine Back Catalog number: 59620 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94957 Decachlorobiphenyl Price on request 1214.17-200-T 8-Methyl-11(H)-benzo[a]carbazole, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 21064-33-5 Price on request 2027.4-100-IO Hexachloro-1,3-butadiene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 87-68-3 Price on request