GC-9860 typeEPC gas chromatograph

EPC gas chromatographThe appearance is atmospheric, the structure is reasonable, and it is equipped with our company's independently developed color screen display technology and gas electronic flow control technology. The automation level and overall performance have been significantly improved. Especially with the successful development and application of gas electronic flow control technology, the gap between domestic and imported models has been shortened. In addition, the network remote transmission and control functions of this instrument make unmanned, decentralized monitoring, and centralized control a reality.

Performance characteristics:

1. The instrument adopts Internet communication technology, which can easily form a LAN; Internet enables remote data transmission, remote control, remote diagnosis, and automatic program upgrade.

2. Three independent connection processes are designed within the instrument network to facilitate real-time monitoring of equipment operation and data results by unit supervisors and higher-level units.

3. A set of working software can support the operation of N chromatography instruments simultaneously, and data analysis enables control of the tested device, greatly reducing the cost of user investment.

4. The instrument can support various injection methods such as automatic sampler, automatic headspace sampler, lysis sampler, etc; Automatic sampling and analysis can be scheduled to achieve unmanned online analysis.

5. Featuring a rapid temperature rise and fall structure, it can achieve a heating rate of 80 ℃/min; Realize operation at room temperature environment; Under liquid nitrogen conditions, it supports a wide range of temperature control from -80 ℃ to 450 ℃.

6. The instrument adopts a 5.7-inch color screen display, which can simultaneously display two spectra; 8-channel flow digital display; The 16th order program heats up

7. Multiple instruments can be combined to achieve multi-dimensional chromatographic analysis of multiple data simultaneously through a single injection.

8. The instrument can automatically recognize the number of detectors equipped by the user.

9. The instrument can be equipped with two thermal conductivity detectors simultaneously and has high sensitivity (S ≥ 10000mv. ml/mg), meeting the higher-level needs of users.

10. Advanced gas path process enables the simultaneous use of hydrogen flame detector and thermal conductivity detector.

Main technical indicators:

Temperature control range: 8 ℃ to 450 ℃ above room temperature, increment: 1 ℃, accuracy: ± 0.1 ℃

Temperature controlled area: 6 channels

● Program heating order: 16 orders

● Lift rate: 0.1-39 ℃/min (ordinary type); 0.1-80 ℃/min (high-speed type)

● Gas control: Mechanical valve control mode, electronic flow pressure control mode optional

EPC and EFC working modes: three types; Crossflow mode, constant pressure mode, and diversion mode

EPC and EFC working gases: five types; Nitrogen, hydrogen, air, helium, argon

EPC and EFC lift: 4th order

External events: 4 channels; 4 auxiliary control outputs

● Sample injector types: packed column injection, capillary injection, six way valve gas injection, automatic headspace injection optional

Number of detectors: 3 (the most numerous); FID, TCD, ECD, FPD, and NPD are optional

● Start injection: manual or automatic selection

● Communication interface: Ethernet: IEEE802.3

Technical specifications of detector:

1. Flame ionization detector (FID)

Detection limit Mt ≤ 5.0 × 10-12g/s (benzene)

2. Thermal conductivity detector (TCD)

Sensitivity: s ≥ 3000mv. ml/mg (benzene) (optional magnification of 1, 2, 4, 8 times)

3. Electron Capture Detector (ECD)

Detection limit: Mt ≤ 1 × 1010-13g/ml (γ -666)

4. Flame photometric detector (FPD)

Detection limit: Mp ≤ 1 × 1010-12g/sec (1605)

Ms ≤ 1 × 1010-12g/sec (thiophene)

5. Nitrogen phosphorus detector (NPD)

Detection limit: Mf ≤ 5 × 1010-13g/s (azobenzene)

Mf ≤ 5 × 1010-14g/s (malathion)


Precautions for using gas chromatograph:

1. Operate according to the instructions in the instrument manual

When inspecting instruments, it is not only necessary to check whether all components are complete, but also to check whether the instrument manual is complete and properly store these materials. Before operating the instrument independently, it is necessary to carefully read the relevant instructions and strictly follow the procedures. This is a prerequisite for good instrument analysis, and once there is a problem with the instrument, it is also easy to negotiate with the manufacturer.

2. Use carrier gas with the required purity

The carrier gas must be of high purity to avoid interfering with the analysis and contaminating the chromatographic column or detector. You should know that the price of a chromatographic column is more than 20 times the price of a bottle of high-purity nitrogen or hydrogen. If ordinary gas is used as a carrier gas to save money, it may be because watermelon is lost and sesame is picked. The auxiliary gas used for the detector is also high-purity grade. Although ordinary gas can be used when sensitivity requirements are not high, the cost may be contamination of the detector. Replace the chromatographic column gasket in a timely manner.

3. Prepare a chromatographic column test standard sample

The performance of the chromatographic column is the key to ensuring the analysis results. The newly purchased chromatographic column should first be evaluated for its performance using test samples. If the test conditions provided by the chromatographic column manufacturer do not meet the requirements, a return or exchange can be requested. More importantly, the performance of the chromatographic column will change during subsequent use. When there are problems with the analysis results, a test standard can be used to test the chromatographic column and compare the results with the previous test results. This helps determine whether the problem lies in the chromatographic column, so that appropriate measures can be taken to eliminate the fault.