EPA Method 8141 Standard Back Catalog number: 93543 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3306.19-K-IO Methyl octadecadienoate (10tr,12c) , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 21870-97-3 Price on request 10546.16-K-IO 9-Hydroxy-9-n-propylfluorene Price on request 8624.44-10MG Nickel meso-tetraphenylporphyrine, , Solvent-, Unit , # of units-, Cas.no. Price on request