The product meets the requirements for thermal desorption analyzer in standards such as GB50325-2010 Code for Indoor Environmental Pollution Control of Civil Building Engineering and HJ 583-2010 Determination of Benzene Compounds in Environmental Air Solid Adsorption/Thermal Desorption Gas Chromatography.

2、 Instrument features and main functions

1. The gas circuit adopts a combination of electric six way valves and solenoid valves to automatically achieve desorption, injection, and blowback cleaning processes

2. Adopting a touch screen for convenient editing, saving, and calling methods

3. The heating temperature of the adsorption tube, pipeline, and six way valve can be independently set,

4. The machine comes with the function of simulating and sampling standard samples, which makes it more convenient to create working curves through a thermal desorption instrument;

5. Through time programming, automatic functions such as desorption, blowdown adsorption, injection, and blowback cleaning (activation) can be achieved;

6. Using Simple Lock locking sealing technology to achieve simple and reliable fixation and sealing of sampling tubes, efficient work can be achieved by fixing and disassembling the sampling tubes in 2 seconds

7. Adopting semiconductor refrigeration, high cooling efficiency, no need for external refrigeration equipment, saving usage costs

7. Adopting international standard adsorption tubes (length 89mm, outer diameter 6.4mm), the adsorption tubes can withstand a temperature of 420 ℃ and are sealed with PTFE caps to ensure longer storage time of the samples;

8. The injection needle is easy to replace and can be connected to all models of GC injection ports at home and abroad

3、 Main technical parameters of the instrument

1. Temperature control range of the pipette: room temperature -400 ℃, accuracy: 1 ℃;

2. Temperature control range of valve injection system: room temperature -220 ℃, accuracy: 1 ℃;

3. Temperature control range of sample transfer pipeline: room temperature -260 ℃, accuracy: 1 ℃;

4. Temperature range for secondary analysis: -35 ℃ -400 ℃, heating rate for secondary flash evaporation:> 3000℃/min

5. Desorption recovery rate:>98% (depending on the composition);

6. Backblowing cleaning flow rate: 0-600ml/min (continuously adjustable);

7. Simulated sampling flow rate: 100ml/min;

configuration

1. One host;
2. Two American standard Tenax TA thermal analysis tubes;
3. Simple Lock locked sealed injection system;
4. One dedicated adapter bracket for gas phase injection port (different brands have different configurations, and the brand needs to be specified before procurement);
5. One set of standard sample simulation sampling device;
6. 2 meters of PTFE gas pipeline;
7. One stainless steel tee;