EPA Method 507 - Performance Check Solution Back Catalog number: 19030 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3299.23-K-IO Methyl 13-cis-docosenoate , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1120-34-9 Price on request 680119 N,N-Dimethylformamide, 5ml Price on request MBP-205 2,3,3',4,4',5,5',6-Octachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request