4,4’-DDD Back Catalog number: 79290 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16173500 Phthalic acid, bis-iso-butyl ester, certified, 0.25g Price on request 674523 PSA-GCB-Mix for 2007.01 per AOAC Price on request 79894 Tetrachloro-m-xylene Price on request