Total Residual Free Chlorine (Cl) Back Catalog number: 54124 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2647.12-50-IO 2,3,3',4,4',5,5',6-Octabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 446255-56-7 Price on request 66047 PCB No. 47, 100µg/ml in Isooctane, 1ml Price on request 92314 EPA Method 525 Spike C Price on request