Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-23ISS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 2547.12-100-ME 1-[4-(2-Methylpropyl)phenyl]ethanone, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 38861-78-8 Price on request 71984 bis(4-Chlorophenyl) methane Price on request 673234 Clofentezine, 10.0 µg/ml, Acetonitrile, 10ml Price on request