Atrazine-desethyl-desisopropyl, 50µg/mL in MeOH, 1ml Back Catalog number: 9315.3-50-ME Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended C15970000 Pentachlorophenol, certified, 0.1g Price on request 0601.27-100-IO ß alpha alpha (20R)-Cholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 481-20-9 Price on request 674916 18O4-Sodium perchlorate, 5mg Price on request