Interference Standard 1 Back Catalog number: 53039 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673374 Methiocarb-sulfone, 10.0 µg/ml, Acetonitrile, 10 Price on request 9274.20-K-ME Naltrexone hydrochloride, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16676-29-2 Price on request 95453 PCB Congeners & Hexachlorobenzene Mix #4 Price on request