Calibration Standard 1 Back Catalog number: 52021 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94593 Freon Gas Mix Price on request X9019 Benzo(g,h,i)perylene Price on request S-4418-7X1MG PCB Mixture 2, Seven Dutch neat 7 Analytes, each 1mg neat Prod.no. Compound Description CAS No. 1999.12 2,4,4’-Trichlorobiphenyl PCB 28 [7012-37-5] 2000.12 2,2’,5,5’-Tetrachlorobiphenyl PCB 52 [35693-99-3] 2001.12 2,2’,4,5,5’-Pentachlorobiphenyl PC Price on request