WS Disinfection By-Products - Cal Check Back Catalog number: 91837 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended NAP6MHPS Sodium perfluoro-6-methylheptanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 30016 4-Nitrophenol Price on request 2092.13-K-IP 2,4-Dibromophenol-PFB, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. Price on request