Total Residual Free Chlorine (Cl) Back Catalog number: 54224 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4121-ASS-IO Routine Biomarker Internal Standard Cocktail 4 S-4121-ASS-5IO 7 Analytes, each concentration as listet in isooctane; units: 10x1mL, 1x5mL, 5x5mL Please inquire for other quantities. Chiron No. Name CAS No Price on request 2559.8-50-ME 1H,1H,2H,2H-Perfluorooctane sulfonic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 27619-97-2 Price on request 71318 2,4,4-Trimethyl-2-pentene Price on request