Vent Tool

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	Venting / Purging
	Application Type
	SPECIAL
	Application ID
	Venting with an inert gas before Headspace
	Description
	Accessory Showcase

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A sample application can perform Multiple Extraction Headspace Analysis using 10ml or 20 ml vials. The process will use a vent tool to flush the headspace of the sample vial prior to each injection. This flushing of an inert gas can be followed by an agitation period during which the vial will be heated and shaken in an agitator. The length of the flush period as well as the agitation period will be determined by the operator. Once the agitation process is completed, a headspace sample will be collected from the vial and injected into the appropriate GC port for analysis.

Main Features

Works with standard COMBI PAL
Dynamic Headspace analysis
Multiple Headspace Extraction
Analysis which require removal of ambient air from headspace
Large volume dispensing to closed vials
Can provide pressure relief

Requirements

COMBI PAL with gas flush line and magnetic transportation of vials
Special PAL firmware supplied by LEAP
Special macro or cycle required and supplied by LEAP
Vials must have thin piercable septa

Uses include

Headspace stripping
Relief of pressure from reactions
Both positive and negative
Relief of pressure from large volume additions
Replacement of gases within a vial
Multiple Headspace Extraction – an integration technique for quantifying how much of each compound is in a sample
Blanketing the sample with an inert gas, i.e. foods, so that no oxidation takes place in the headspace while the sample is being heated