Total Residual Free Chlorine (Cl) Back Catalog number: 54224 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673373 Methiocarb, 100 µg/ml, Acetonitrile, 5ml Price on request 2513.9-500MG Acetylsalicylic acid, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 50-78-2 Price on request 94049 PAH Mix (16+Benzo(e)pyrene&Perylene), 100µg/ml in AL,1ml Price on request