Internal Standard - Surrogate Mix Back Catalog number: 96032 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72230 Penicillin G, 1000µg/ml in MeOH, 1ml Price on request 92005 Oxygenates in Gasoline Standard Price on request 674888 Sulfisomidine, 250mg Price on request