WS Disinfection By-Products - Cal Check 4 Back Catalog number: 93986 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674028 Clopyralid, 10.0 µg/ml, Acetonitrile, 10ml Price on request 673379 Methomyl, 100 µg/ml, Acetonitrile, 5ml Price on request 70015 Aroclor 1016 Price on request