PROPYLENE ANALYZER

The specifications for most propylene and ethylene products result in the need to perform several gas chromatographic analyses on multiple instruments in most laboratories today. CIC's E/PA-1 (Ethylene/Propylene Analyzer) employs up to three different detectors, reducing the number of instruments necessary for the required analyses on propylene or ethylene.

The chromatogram in Figure 1 shows a familiar FID analysis for hydrocarbons.

E/PA-1 Propylene Trace Components by FID


The chromatogram in Figure 2 was obtained using a DID (Discharge Ionization Detector).

E/PA-1 Propylene Trace Components by Discharge Ionization Detection


The valving, columns and pneumatics for this detector are all contained in a purged housing to ensure detector stability and analytical accuracy on oxygen and nitrogen.

Ethylene samples (see our Ethylene Analyzer application) are injected by a gas sampling valve while head-pressurized propylene samples are either injected by liquid sampling valve or utilize CIC's flow-through vaporization system followed by gas sample valve injection.

 

Chromatographic Instruments Company
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