TDAS 2020 at the RTC PAL
The short film shows transport, prerinsing, desorption and return transport.
Laboratory automation
PAL3 TDAS 2020
Chromtech
Chromtech’s PAL3 TDAS 2020 automates thermal desorption at the RTC PAL. A mobile furnace transfers volatile and less volatile compounds directly from the sample tube into the GC injector – without an additional transfer line.
- Manufacturer
- Chromtech
- Product range
- Laboratory automation
- Advice
- Direct from Chromtech
Automatic thermodesorption
Transfer volatile compounds directly into the GC.
Chromtech PAL3 TDAS 2020 automates the thermal desorption of volatile and heavy volatile compounds from solid, liquid and gaseous samples. The RTC PAL transports the glass tubes; a mobile oven heats the sample directly at the injector. An additional transfer line is omitted.
- Up to 296 samples, depending on the configuration
- 11 mm diameter TDAS glass tube
- tubes with adsorbents such as Tenax or Carbotrap
- Direct thermal extraction of solid samples
- Conditioning of the tubes after analysis at 350 °C
- Method control via the PAL and integration into chromatography data systems
Typical applications are the investigation of food, flavours and fragrances as well as the monitoring of air quality.
TDAS 2000 is the predecessor system for CombiPAL and CombiPAL-xt. The PAL3 version shown here is called TDAS 2020. 350 °C refers to conditioning after analysis.
Expiration at RTC PAL
From sample tube to thermodesorption.
Receiving tubes
The RTC PAL grips the TDAS glass tube in the sample carrier and transports it to the desorption unit.
Rinse with nitrogen
A pre-rinse with inert nitrogen removes air and oxygen from the tube.
Thermal desorption
The movable oven heats the tube. Helium carries the released compounds directly into the GC injector.
Reset tubes
After desorption, the RTC PAL returns the tube to its position in the sample carrier.
In practice
Thermodesorption and odour assessment.
Yassin Hardi reports on an installation with Chromtech TDAS 2020, an Agilent 8890/5977B GC-MS system and the GL Sciences PHASER Pro. The plant combines thermal desorption with chemical analysis and odour assessment.
TDAS 2020 takes over the thermal sample introduction. The GC-MS system separates and examines the released compounds; the PHASER Pro can be used to evaluate the odour impressions of the separated substances. The example shows a combination for the investigation of aromas and fragrances.
The image shows an existing system; the system configuration is tailored to the application.
PHASER Pro for Odor Evaluation
Practical report on LinkedIn →
Advice and integration
For the appropriate system configuration.
Whether this product fits your application depends on the sample, method and existing device environment. We clarify the requirements, coordinate the configuration and accompany the integration into your laboratory process.