Internal Standard Back Catalog number: 92467 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-EU-PAH-ISS Deuterated PAH Solution/Mixture, 1.2ml, toluene Price on request 0052.17-200-T Benzo[a]fluoren-11-one, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 479-79-8 Price on request 677892 Phosalone, 100 µg/ml, Ethyl acetate, 1ml Price on request