WS Disinfection By-Products - Cal Check 3 Back Catalog number: 93985 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 13800-0049-1000IO 1,2-Cyclohexanedicarboxylicaciddiisononylester, 1000µg/ml in IO, 5ml Price on request 79420 2-Methylnaphthalene Price on request 79612 1-Methylfluorene Price on request