EPA Method 1664 - Oil & Grease (Sonicate) Back Catalog number: 91958 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-1378-S 1,3,7,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 56079 Gold (Au) Price on request 673730 Ametryn, 10.0 µg/ml, Ethyl acetate, 10ml Price on request