Vent Tool

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[[Category:Headspace]]
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[[Category:Glossary]]

Revision as of 17:41, 9 June 2009

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


Contents

Overview

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

Photos


Useful Links

GC Headspace

Accessories for the PAL

Other Accessories for PAL Robots


Contact LEAP

For additional information about this technique please contact LEAP Technologies for detailed information

Contact the LEAP office

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