WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71468 2,2',4,6,6'-Pentamethyl-3-heptene (cis,trans) Price on request 8421.4-100-ME Desphenyl chloridazon, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 681241 Propyrisulfuron, 10mg Price on request