Total DMRQA (Kit) - Pre 2006 Back Catalog number: 55074 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66070 2,3',4',5-Tetrachlorobiphenyl (70) Price on request 92834 EPA Method 8141 Standard Price on request MDD-1234 1,2,3,4-Tetrachloro[13C12]dibenzo-p-dioxin , 1.2ml x 50ug/ml, toluene Price on request