- Unparalleled stability and moisture control
- Maximise productivity and reduce carryover
- User friendly interface
The Evolution Purge and Trap Concentrator was designed from the beginning with the user in mind. The system needed to provide high productivity, stability, reliability and fast maintenance to meet the needs of today’s laboratory for the concentration of volatile organic compounds (VOCs).
Unparalleled Stability and Moisture Control
- Perform EPA methods 8260, 524.2, 524.3, 524.4, 624, BTEX, GRO, DRO with reduced carry over
- The Evolution is the ONLY purge and trap concentrator on the market designed to remove water during the purge process NOT during desorb and eliminates samples from being overexposed to moisture.
As detection limits have been pushed lower, and Mass Spectrometer systems more sensitive, moisture control is key to the overall stability of the complete system. Other systems collect the analytes and water on the analytical trap, then, during desorb, the sample flows through a moisture removal system on the way to the GC. When evaluating these systems, one problem became quickly apparent. If you are going to remove moisture during the desorption step when your flow is controlled by the GC, the effectiveness of this design will be determined by many different factors.
EPA methods require you to purge between 40-50ml/min of flow. As you purge, the water and VOCs travel through a Moisture Reduction Trap (MoRT) on the way to the analytical trap. This prevents a large amount of moisture from contacing the analytical trap. By using an 8-port valve instead of a 6-port valve, the sample during desorption goes directly to the GC. In other systems the sample flows through a moisture system during this step. This creates a lot of extra volume in the desorption pathway, allowing peaks to broaden, sacrificing peak resolution.
Maximise Productivity and Reduce Carryover
- The Evolution is the ONLY purge and trap concentrator with a patented process that separates bake flows ensuring the lowest carryover available.
- The Evolution offers Faster cycle times as achieved with cool-down times of less than 2 minutes.
- The Evolution has an automated ready signal during bake to reduce cycle time by several minutes per sample.
- Exclusive 3 year warranty on electronic boards.
EST Analytical patented a process on the Evolution where there are two flows that go through the system during bake; one flow is directed across the trap and another separate flow goes through the glassware. Other systems actually have the bake flow travel through the trap then through the cold glassware, depositing heavy compounds on the cold glassware surface to be seen on subsequent runs. By separating the flows, the Evolution avoids this problem and by heating the sparger vessel (optional) up to 125 °C during the bake sequence, carryover is reduced dramatically.
User Friendly Interface
- Downloads : EST Centurion Water and Soil Purge and Trap Autosampler
- Downloads : EST Evolution Purge and Trap Concentrator
- Application Note : EST - A Single Calibration Method for Water ANDSoil Samples Performing EPA Method 8260
- Application Note : EST - Analysis of Coffee Flavors by Purge and Trap Sampling
- Application Note : EST - Automated Dilutions Using the CenturionAutosampler
- Application Note : EST - Automated Sampling of MethanolExtractions
- Application Note : EST - Benefits of Using Desorb Flow Control with the Encon Evolution
- Application Note : EST - California Oxygenates and 8260
- Application Note : EST - Drinking Water Analysis Conditions for USEPA Method 524.3and the Newly Proposed Method 524.4
- Application Note : EST - Effect of Split Ratio on Usepa Method 8260 compounds
- Application Note : EST - Low Level 2-Methylisoborneol and Geosmin Detection by Purge and Trap Sampling
- Application Note : EST - Maximising Production While Minimizing Costs
- Application Note : EST - Maximizing Sample Throughput In PurgeAnd Trap Analysis
- Application Note : EST - Optimal Conditions for USEPA Method 8260 Analysis
- Application Note : EST - Optimal Conditions for USEPA Method 8260B Analysis using the EST Analytical Sampling System and the Shimadzu GCMS-QP2010s
- Application Note : EST - Optimising Standard Preparation
- Application Note : EST - Optimization of 1,4-Dioxane and Ethanol Detection Using USEPA Method 8260
- Application Note : EST - Reducing Carryover in Environmental Water Samples
- Application Note : EST - UCMR 3 Application Note