DW-EXPEC236 Full-automatic Headspace Sampler GC Accessories
DW-EXPEC236 full-automatic headspace sampler is a pretreatment device that puts the sample to be tested in a sealed constant temperature system for gas-liquid or gas-solid balance, and sends the balanced components to be tested to chromatographic analysis. Based on the new design of static headspace pressurization technology, it realizes the solvent-free and efficient extraction of liquid samples and solid samples.
DW-EXPEC236, with the functions of automatic leak detection/multiple extractions/multiple injections, is simple to operate and convenient to maintain, thus improving the pretreatment efficiency of complex samples in all directions, capable of meeting the testing needs of various industries such as environment, cosmetics, materials, justice, health, petrochemical, tobacco and food.
The instrument is mainly composed of an automatic sampling system, a headspace analysis system, and a data recording and processing system. The sample to be tested, after being placed in the sample position, is grabbed to the injection position by XYZ three-axis sample injector. After the sample is heated and pressurized for a certain time, the automatic injection process is controlled by the system.
Basic principles of DW-EXPEC236 Full-automatic Headspace Sampler
Headspace injection is a convenient and quick sample pretreatment method in gas chromatography. The principle is that the sample to be tested is placed in a closed container, and the volatile components are volatilized from the sample matrix by heating, reaching equilibrium in gas and liquid (or gas and solid) phases, and the top gas is directly extracted for chromatographic analysis, so as to analyze the composition and content of volatile components in the sample. Headspace sampling technology can avoid tedious sample pretreatment process, avoid the interference of organic solvents on analysis, and reduce the pollution to chromatographic column and injection port.
Features of DW-EXPEC236 Full-automatic Headspace Sampler
- High sample throughput
- Full inert treatment of the flow path
- Full process high temperature design
- Machine reinforcement design
- Any combination
- Precision control
- Easy to operate
- Function assistant
Applications of DW-EXPEC236 Full-automatic Headspace Sampler
Can be used with GC/GC-MS
For Medicine, cosmetics, public security investigation, environmental science, energy, material science, light industry packaging, food science, etc.
Specifications of DW-EXPEC236 Full-automatic Headspace Sampler
| Item | Indicator |
| Sample cooling | Double cooling position design |
| Temperature setting | Room temperature ＋5℃~300℃ |
| Transmission line temperature | Room temperature ＋5℃~300℃ |
| Valve box temperature | Room temperature ＋5℃~300℃ |
| Priority position | 3 positions |
| Pressure control | EPC control |
| Quantitative volume | 0.1mL, 0.5mL, 1mL and 3mL for option |
| Calibration function | With automatic calibration function |
| Leak detection mode | Automatic leak detection |
| Automation form | XYZ three-coordinate form |
| System function | Instrument alarm, maintenance log, etc. |
| Auxiliary function | 5-stage sample oscillation function/overlapping heating/multiple extractions |
| Repeatability | 1.5% RSD |
| Transmission line | Connected with GC injection port to realize tool-free quick disassembly and 360° protection sleeve |
| Gas type | Nitrogen/Helium |
| Communication mode | LAN |
| Operating power supply | AC 220V±10%/50Hz |
| Power | ≤800W |
