WS Disinfection By-Products - Cal Check 1 Back Catalog number: 92894 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674082 Anthraquinone, 250mg Price on request 1726.15-K-IO 1-Methoxyphenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 834-99-1 Price on request XA15880100AC Parathion-ethyl D10, 100µg/mL in Acetone, 1ml Price on request