WS Disinfection By-Products - Cal Check 3 Back Catalog number: 93985 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683847 Fenfuram, 100 µg/ml, Acetonitrile, 5ml Price on request 674483 PSA-Mix 1 Price on request 677752 Bis(methylglycol) phthalate, 250mg Price on request