The Encon Evolution Purge and Trap Concentrator by EST Analytical 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). 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.
Features:
- Optional sparge heater (patented in Bake mode)
- Optional sample foam sensor
- Moisture control during purge
- 8-port valve isolates the moisture control pathway from the desorb pathway
- Precise temperature control
- Siltek sample pathway
Specifications:
Type | Specifications |
---|---|
Dimensions | 17″H x 11″W x 16″D |
Programmable Time Ranges | 999.99 min for all timed events |
Programmable Temperature Ranges | Trap: ambient to 420 °C Transfer line: ambient to 350 °C |
Trap | Standard EPA-specified traps Conductive heating/replaceable insert Various sorbent materials available for US EPA methods and other applications |
Valve | Electrically actuated 8-port, 45° rotation Replaceable valve rotor |
Transfer Line | Siltek™ tubing, 0.020 ID 60″ standard |
Glassware | Standard 5ml fritted sparge vessel Optional fritted sparge vessels– 15ml and 25ml available Optional unfritted sparge vessels– 5ml and 25ml available |
Power Requirements | Standard unit 100-130VAC (+/-10%)/50/60Hz (800 VA max) Optional unit 230VAC (+/-10%)/50/60Hz |
Gas Supply | Ultra-high purity (99.999%) pure Helium or Nitrogen Incoming gas pressure 60-80 psi |