CLP Semi-Volatile Internal Standard Back Catalog number: 10019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677129 Heptachlor endo-epoxide, 10.0 µg/ml, Cyclohexane, Price on request 8537.16-K-IO n-Butyl iso-butyl phthalate (n-Butyl 2-methylpropyl phthalate), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17851-53-5 Price on request 92695 LCPAH, varied ug/mL in Acetonitrile, 1ml Price on request