WS Organic Drinking Water Kit Back Catalog number: 38318 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9425.8-100-ME Valproic acid-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 87745-17-3 Price on request 2041.4-50-ME Perfluorobutane sulfonic acid, 50ug/ml, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 59933-66-3 Price on request 3474.6-100 Pentachloronitrobenzene, 100ug/ml, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 82-68-8 Price on request