EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-12389-S 1,2,3,8,9-Pentachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 8899.22-K-IO Ethyl 5,8,11,14,17-eicosapentaenoate (all-cis), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 84494-70-2 Price on request 1832.19-50-ME 4-Nonylphenol diethoxylate, mixture of nonylisomers,100 µg/mL,MeOH,1mL, Price on request