WS Disinfection By-Products - Cal Check 3 Back Catalog number: 93985 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684992 5-Chloro-2-hydroxybenzophenone, 250mg Price on request 11294.12-10MG 3-Nitrobenzofuran,neat,neat,10mg, Price on request 682993 Dicamba-desmethyl, 50mg Price on request