WP & DMRQA Total Residual Chlorine Back Catalog number: 55062 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11664.12-100-IO 2,3-Dichlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 50652 200.8Low Intermediate Standard - Parent Price on request 3489.11-100 Profenofos, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 41198-08-7 Price on request