4,4’-DDD Back Catalog number: 70099 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 20052 CLP Semi-Volatiles - PAH Calibration Mix Price on request 94162 GSES Standard 2006 Sub 2 Price on request DF-1278-S 1,2,7,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request