EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0032.22-10UG (5)Helicene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 188-52-3 Price on request 2117.16-K-IO Diphenyldiethyltin, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 10203-52-8 Price on request 673281 Fenamiphos, 100 µg/ml, Acetonitrile, 5ml Price on request