Total Residual Free Chlorine (Cl) Back Catalog number: 54124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8228.10-100 Tri-allate, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 2303-17-5 Price on request 679556 D5-Nalidixic acid, 10mg Price on request 677809 D6-Ethanol, 100 µg/ml, Acetonitrile, 1ml Price on request