Shanghai Jingqi Gas Chromatograph GC-7890, Shanghai Jingqi Instrument Co., Ltd. (CAT#: STEM-C-0368-YJL)

Shanghai Jingqi Gas Chromatograph GC-7890, model GC-7890 is manufactured by Shanghai Jingqi Instrument Co., Ltd.
This product has the characteristics of high integration, simple operation, high degree of automation, good reliability, and adaptability to long-term operation, etc., and its cost performance ranks in the forefront among similar products.

1. Working conditions
Power supply: 220V, 50Hz
Ambient temperature: 15℃～35℃
Ambient humidity: 5% to 95%
2. Oven
Furnace size: 28×30×17cm
Operating temperature range: above room temperature to 450°C
Temperature setting accuracy: 0.01°C
Program heating rate: 120°C/min
The longest method run time: 999.99min
Program heating steps: 8 steps (expandable to 20 steps)
3. Injection port
A variety of injection ports can be equipped: packed column injection port, split splitless injection port, all injection ports include electronic flow control module split/splitless capillary column injection port with high-precision electronic pressure/flow control
Operating temperature: 400°C
Column head pressure setting range: 1-100psi
Column head pressure control setting accuracy: 0.01psi
Total flow setting range: 0 - 1000ml/min (helium); 0 - 200ml/min (nitrogen)
Flow setting accuracy: 0.1ml/min
Split ratio: 1:1000
4. Full valve configuration system
It can be equipped with 1 automatic control valve, which can be operated automatically in sequence (four-way valve, six-way valve, ten-way valve and liquid sampling valve are optional) and the auxiliary electronic flow control module (pressure/flow control mode) can be switched at high speed. Long life of solenoid valve (1 million times, 10mS)
5. Detector
All detectors include electronic flow control modules, and later expansion can install any three detectors at the same time to achieve fully automatic and accurate analysis.
5.1 Hydrogen Flame Ionization Detector (FID)
1) The signal amplification board has been specially treated, and it is always stable in harsh environments
2) Automatic ignition, hydrogen leakage protection function, unique logarithmic amplifier technology
3) High-precision electronic flow/pressure control, suitable for packed columns and capillary columns, operating temperature 450°C, minimum detection limit <5 pg carbon/s (n-hexadecane), dynamic linear range: 107 (±10 %), data acquisition frequency: 100hz
5.2 Thermal Conductivity Detector (TCD)
1) Compatible with packed columns and capillary columns
2) Fast stabilization time, small dead volume and short equilibration time
3) High-precision electronic flow/pressure control, suitable for fish-packed columns and capillary columns, operating temperature 400°C, data acquisition frequency: 100hz, dynamic linear range: 105 (±10%), minimum detection limit: <800pg propane/ ml (helium)
5.3 Electron Capture Detector (ECD)
1) Sophisticated design, stable and efficient
2) Safer and higher sensitivity, only 8mCi ultra-low radiation but high response value
3) Anode purging effectively avoids cross-contamination between samples, high repeatability
4) Line source capacity: 370MBq Temperature range: ~400℃ Minimum detection limit: 8fg/s (γ-BHC) Dynamic range: 105
5.4 Flame Photometric Detector (FPD)
1) Unique local cooling technology to increase the maximum operating temperature
2) No cold spot for organophosphorus pesticides
3) The internal pipeline is fully inertized to ensure zero adsorption of samples
4) Temperature range: ~350°C; Minimum detection limit: P: 0.11pg/s (110fgP/s) (tributyl phosphate) S: 5pg/s (dodecanethiol); Dynamic range: P: 104 S : 103

Large color LCD display in Chinese and English
Touch screen buttons
Fully digital parameter operation
Pneumatic operation parameter automatic control (EPC)

Shanghai Jingqi High Performance Liquid Chromatography JQ-300 (CAT#: STEM-C-0369-YJL)