WS Disinfection By-Products - Cal Check 3 Back Catalog number: 93985 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676785 Paraquat dichloride, 100 µg/ml, Water, 1ml Price on request 688502 D6-Metolachlor, 100µg/ml in Acetonitrile, 1ml Price on request 96614 Risperidone Price on request