Method 1613Labelled Compound Stock Solution, in Nonane, 4 x 0,5ml Back Catalog number: EDF-8999-4 Availability: In the manufacturer's stock Price on request - + Recommended 30031 EPA Method 525 - Internal Standard Price on request 0490.8-K-IO 2,2'-Dithienyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 492-97-7 Price on request 71543 sec-Butylamine Price on request