EPA Method 525.2 - IS/SS Mix Back Catalog number: 37031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12000.16-100-ME rac-Norsertraline hydrochloride ,100 µg base/mL,MeOH,1mL, Price on request 79035 Indeno(1,2,3-cd)pyrene, 1000µg/ml in Acetonitrile, Price on request 43014 1-Fluoronaphthalene Price on request