Internal Standard Solution, 1.2ml, nonane Back Catalog number: EPA-23IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 54521 Nitrate & Nitrite as N Price on request 1308.32-K-IO n-Dotriacontane-d66, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 62369-68-0 Price on request 673414 Pirimicarb-desmethyl, 10.0 µg/ml, Acetonitrile, Price on request