Internal Standard Back Catalog number: 95592 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2018.7-1ML o-Fluorotoluene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 95-52-3 Price on request 678430 Hexachlorobenzene, 100 µg/ml, Acetonitrile, 5ml Price on request 71319 1-Nitropyrene Price on request