WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BB-77 3,3',4,4'-Tetrabromobiphenyl, 1.2ml x 50ug/ml, nonane Price on request 92704 EPA Method 525Mix #2 Price on request X9183 2-Picoline Price on request