WS Disinfection By-Products - Cal Check Back Catalog number: 91837 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31027 EPA Method 525 Pesticide Mix #1 Price on request X9033 4-Bromophenyl phenyl ether Price on request 0137.12-K-IO 2-n-Octylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 880-36-4 Price on request