Gas purification & Control Panel & Related Accessories

In Gas Chromatography, the need for Purification panel has been realized both for the column & the detector. As the number of problems in Gas Chromatographic analysis are caused by impure gases, the gases used in the GC have to be pure and free form Oxygen Hydrocarbon and moisture as they are harmful to GC. The hydrocarbons present may give baseline noise and irreproducible results. Moisture and oxygen can strip phase, case excessive bleed thus damaging the GC column or shorten its span.

Salient Features

 Improves reproducibility of analysis.  Reduce baseline noise , drift problems etc.  Increase column life preferably for polar & capillary columns.  Deliver better than UHP grade gasses.  Increase detector life & reduces flame problem.  Save costly gases through toggle valves & gas distribution panel.

Benefits

 Improves reproducibility of analysis.  Reduce baseline noise , drift problems etc.  Increase column life preferably for polar & capillary columns.  Deliver better than UHP grade gasses.  Increase detector life & reduces flame problem.  Save costly gases through toggle valves & gas distribution panel.


Gas Control Box


Gas Control Box is used when there is more than one Gas Chromatogragh. It helps to control the flow and pressure of different gases for different GC’s. From a Gas Purification System, purified gases can be supplied to a number of Gas Chromatographs through Gas Control Boxes when each instrument requires different delivery pressure & flow. Gas Control Box is generally installed between Gas Purification system and Gas Chromatograph. It consist of pressure gauge, pressure regulator and toggle valves. This also isolates system.

Gas Selector Box


Standard system consists of a panel incorporating gas controls and purification traps for four gases in a unit, namely, Nitrogen, Helium, Hydrogen and Zero Air. Frequent changeover of carrier gas from Helium to Nitrogen is required for certain Gas Chromatographic applications. Hence, Gas Selector Box is used for the selection between two gases of different types. This uses a special Gas Sampling Valve which takes care of leakage problems especially faced while using Helium. Two types of gas selector box are available one with selector valve, pressure gauge & toggle valve, another with only two toggle valve.

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