EPA Method 1664 - Oil & Grease (Sonicate) Back Catalog number: 92984 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679686 D5-Brilliant green hydrogen sulfate hydrate, 10mg Price on request BDF-238 2,3,8-Tribromodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 2121.16-500-IO 2,7-Dimethylphenanthrene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1576-69-8 Price on request