WS Residual Free Chlorine Back Catalog number: 55023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MBP-77 3,3',4,4'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request 97873 Isoquinoline Price on request 15900-0826-10AN5 Chloridazon-methyl-desphenyl, 10µg/ml in Acetonitrile, 5ml Price on request