EPA Method 8330 Analyte Back Catalog number: 79244 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52147 Method 1640 Tuning Standard Price on request DF-LCS-A Mass-Labelled PCDD/PCDF Solution/Mixture , 1.2ml , nonane Price on request 10638.12-50-NN 1,2,3,4,6,7,8-Heptabromodibenzofuran,50 µg/mL,n-nonane,1mL, Price on request