AIRSENSE - Model EDU3 -Enrichment and Desorption Units

Through the adsorption process it is possible to concentrate organic compounds or a range of analytes by separating them from common interfering substances. Depending on the parameters of analysis and the target substances, it is possible to improve on detection limits to a certain extent.

An additional advantage for analysis with gas sensor instruments (like PEN) is that common interfering compounds and/or compounds with a neutral smell, like water, methane or ethanol, can be almost completely extracted from the sample.

EDU3 is a fully-automated enrichment and thermal desorption unit, which is used for air analysis or for sample preparation. EDU3 allows it to concentrate substances or perform a selection from certain substances for subsequent analysis.

The stand-alone instrument moves through the cycles themselves. With the software side access to the analysis parameters, the selectivity and sensitivity can be influenced. Also, by the selection of the adsorbent, the collection and desorption to the problem and the target substance to be adjusted. Thus, enrichment factor between 10 and 1000 are achieved.

Due to its internal flow path system, the device can be easily connected to different detectors. It can be used as a stand-alone unit or in combination with a headspace sampler. Special versions are available which are compatible with common laboratory GCs, Micro-GCs and mass spectrometers.

• Improvement on detection limits
• Improvement of selectivity
• Automated cycle from enrichment to desorption
• Simple change of adsorbent tubes
• Programmable and independent operation
• Possibility to connect to different detectors

• Detection of odorants in natural gas
• Proof of solvents in the workplace
• Investigation of pharmaceutical aerosols

• Increased selectivity
• Better detection limits
• Portable instrument
• Automatical cycles
• Easy replacement of the adsorbent tube with bayonet lock
• Computer supported or standalone mode