WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73239 Ketoconazole, 1000μg/ml in MeOH, 1ml Price on request 2012.12-100-DS 3,3',4,4',5-Pentachlorobiphenyl, 100 µg/mL, Solvent-dimethylsulfoxide, Unit 1mL, # of units-1, Cas.no. 57465-28-8 Price on request 2824.10-50-ME Perfluoro-3,7-dimethyloctanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 172155-07-6 Price on request