Total Residual Chlorine (Cl) Back Catalog number: 59379 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3583.13-K-IO Thioxanthone, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 492-22-8 Price on request 674553 Picolinafen free acid, 10mg Price on request 70914 Hydroquinone Price on request