WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673290 Fenthion, 10.0 µg/ml, Acetonitrile, 10ml Price on request 9069.7-K-IP 4,6-Dichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 16766-31-7 Price on request MA9069 5000 µS/cm calibration solution (230mL) Price on request