WS Residual Free Chlorine Back Catalog number: 55023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70019R Aroclor 1248 Price on request 10021.12-100-IO 2,2',4,5,5'-Petanchlorobiphenyl-3',4',6'-d3 Price on request 684088 Dibromoacetic acid, 100 µg/ml, Acetonitrile, 1ml Price on request