Custom Metal Mix Back Catalog number: 50102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3743.12-100-IO 2,3,3',4,4',5,6-Heptachlorobiphenyl , 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 74472-50-7 Price on request 2780.9-100-AN Ethion Price on request 70608 2,4-D, butoxyethanol ester Price on request