EPA Method 508A DCB Stock Solution Back Catalog number: 30020 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended RS210-204 RS210-204 HEPTANE ( 99.75%) Price on request 676381 Etrimfos, 10 µg/ml, Acetonitrile, 10ml Price on request 11761.12-10-IO 2,2',3,4,4',5,6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request