Calibration Standard 1 Back Catalog number: 52021A Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675366 4-OH-Pyriproxyfen (4'-OH-Pyr), 10mg Price on request 70454 Benzo(g,h,i)perylene-d12, 1000µg/ml in Methylen Chloride, 1ml Price on request MTCHLORD trans-(13C10)Chlordane (g), 1.2mL x 100ug/mL, nonane Price on request