EPA Method 502/524 Surrogate Standard #1 Back Catalog number: 30070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-136-S 1,3,6-Trichlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request BCR-163 Beef/pork fat blend - Fatty acids, 2 x 5ml Price on request 680853 PCB 99, 5mg Price on request