QC Standard 3 Back Catalog number: 53086 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71927 Disulfoton sulfone, 1000µg/ml in MeOH, 1ml Price on request 1995.10-50-IO 1,4-Dichloronaphthalene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 1825-31-6 Price on request 94509 EPA Method 8151 Standard Price on request