EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1534.20-10MG Perylene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1520-96-3 Price on request C14379000 D-Isoascorbic acid, 250mg Price on request S-4197-ASS-10RFX5 Revised Oxygenate Quality Control Standard (with Internal Standard) 14 Analytes, each Wt.% as listed in RFA Gasoline; units: 1x10mL, 5x10mL Name Wt.% Name Wt.% Methanol 1 Di-isopropyl ether 1 Ethanol 1 iso-Butanol Price on request