EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 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 677544 4,4'-Dichlorobenzophenone, 100 µg/ml, Acetone, 1 Price on request 12018.10-K-ME Di(propylene glycol) butyl ether, mixture of isomers,1000 µg/mL,MeOH,1mL, Price on request