4,4’-DDD Back Catalog number: 79148 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 63031 2,4’,5-Trichlorobiphenyl Price on request 2127.12-10-IOX10 Arochlor 1248 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 12672-29-6 Price on request 59557A Metals Mix #1 Price on request