WS Disinfection By-Products - Cal Check 2 Back Catalog number: 93984 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 19227 EPA Method 8110 - Haloethers Price on request 8707.12-5MG 2,2',3,4',5,5',6-Heptachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 52663-68-0 Price on request 97169 Glucose, Cellobiose & Dextran Ratio Level 4 Price on request