Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83539 Acrolein-DNPH Price on request MKI-C-CHK10 Check std, BTX, IBMA, di-octyl phth 10pk 68 285,40 Kč 51 214,05 Kč S-4197-ASS-10RF 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