WS Disinfection By-Products - Cal Check 2 Back Catalog number: 93984 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16284000 Ponceau 4RC (E124), certified, 0.1g Price on request 2216.10-K-T 1-Nitronaphthalene-d7, 1000µg/ml in Toluene, 1ml Price on request 73158 Dodecanoic acid Price on request