Total Residual Free Chlorine (Cl) Back Catalog number: 59427 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70223 Naphthalene-d8, 1000µg/ml in MeOH, 1ml Price on request 10458.30-50-ME Tetraphenylrecorcinol bis(diphenylphosphate), 99% (LC) Price on request 59224 Total Organic Carbon (C) Price on request