WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677573 Hexamethylphosphoric Triamide, 5ml Price on request 678404 Etoxazole, 100 µg/ml, Acetonitrile, 5ml Price on request DF-234-S 2,3,4-Trichlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request