WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675243 Paraoxon-ethyl, 100 µg/ml, Acetonitrile, 5ml Price on request C10148500 Amaranth, certified, 0.25g Price on request 682203 Fenoxaprop-P-ethyl, 10.0 µg/ml, Acetonitrile, 10 Price on request