USGS 8022 Standard Back Catalog number: 93314 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8749.12-50-IO 3,4'-Dibromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 83694-71-7 Price on request 10633.12-50-NN 1,2,3,4,7,8-Hexachlorodibenzofuran ,50 µg/mL,n-nonane,1mL, Price on request 675739 Benfluralin, 10.0 µg/ml, Ethyl acetate, 10ml Price on request