Internal Standard Solution, 1.2ml, toluene Back Catalog number: EPA-8280IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 81801 EPA Method 608 Pesticides Price on request 678407 Fenamiphos-sulfoxide, 100 µg/ml, Acetonitrile, 1 Price on request 9316.18 (1S,2R,3S,4S)-1,2,3,4-Tetrahydrobenz[a]anthracene-1,2,3,4-tetrol, , Solvent-, Unit , # of units-, Cas.no. Price on request