Brand Name BETTER UNITED
Model Number GC-7900
Place of Origin China
Customized support OEM, ODM, OBM
Warranty 1 Year
Delivery Time 5-8 work days
Use Analytical test
Price Negotiable
Consult immediately
Detail

Gas Chromatograph GC-7900



Description:

The gas chromatograph GC-7900, with high-quality product quality, is widely used in laboratories in industries such as chemical, environmental protection, pharmaceuticals, food, and gas, providing scientific assurance for product testing and analysis.


Features:

1. The instrument adopts a LCD 320 x 240 dot matrix 7.5 inch large screen with Chinese display, real-time display of various temperatures and operating conditions. The operating conditions are clear at a glance, and there is no need to reset parameters when starting up, making it simple and direct.

2. Touch button input, with keyboard locking function to prevent accidental operation from disrupting the normal use conditions of the instrument.

3. High precision dual stable gas path, capable of installing four types of detectors simultaneously, with each gas path controlled separately. The control valve has high accuracy and good reproducibility, effectively ensuring the consistency of each analysis.

4. The overall performance of the instrument is stable, able to adapt to long-term uninterrupted operation, with short analysis time and high analysis efficiency.

5. Power-on self check, six independent temperature control (independent temperature control for vaporization chamber and capillary vaporization chamber), eight step programmed heating function;

6. Wide range self diagnosis function, automatically displaying fault phenomena, fault codes, and causes in Chinese when the instrument malfunctions, assisting in finding and resolving faults as quickly as possible, ensuring the best working state of the laboratory;

7. Over temperature expansion function: If any circuit exceeds the set temperature, the instrument will automatically power off and alarm;

8. Intelligent fuzzy control rear door opening system, automatically tracking temperature and dynamically adjusting the angle of the rear door opening, achieving precise temperature control even near room temperature;

9. Equipped with filling column head injection, capillary column injection with glass inner liner, capillary split/non split injection device with diaphragm cleaning function, and gas injector can be installed;10. It can be equipped with various models of automatic headspace samplers, fully automatic headspace samplers, liquid automatic samplers, thermal analyzers/desorbers, mass spectrometers, and other joint injection systems.11. Configurable online analysis system to achieve online analysis and detection, and real-time upload of online analysis data through data transmission protocol.


Specification:

Temperature control index parameters
Temperature control range
room temperature+5 ℃~450 ℃ in increments of 0.1 ℃
Temperature control accuracy
better than ± 0.01 ℃
Programmed heating
Eighth order interstage constant temperature time 0-999min
Increment
0.1 min
Temperature increment
0.1 ℃
Heating rate
Maximum 40 ℃/min at 200 ℃   Maximum 20 ℃/min at 200 ℃
Detector indicator parameters
1. Hydrogen flame detector (FID):
Sensitivity Mt ≤ 5 × 10-16g/s (n-hexadecane)
Noise ≤ 2 × 10-14A ,linear range ≥ 106
2. Thermal conductivity cell detector (TCD):
Sensitivity S ≥ 6000mv.ml/mg (n-hexadecane)
Increase and amplify S ≥ 10000mv.ml/mg (n-hexadecane)
Noise ≤ 20uv, linear range ≥ 104
3. Flame Photometric Detector (FPD):
Method
S or P with filter
Sensitivity
1 × 10-11g (s)/s (S in thiophene), 1.4 × 10-12g (p)/s (P in methyl parathion)
4. Electronic Capture Detector (ECD):
Sensitivity
Mt ≤ 1 × 10-13g/ml (r-666)
Noise
≤ 15uv
Linear range
≥ 5 × 103
Radioactive source Ni63
Ni63
5. Nitrogen and phosphorus detector (NPD):
Sensitivity: Nitrogen Mt ≤ 5 × 10-11g/s (azobenzene)
Phosphorus Mt ≤ 2 × 10-12g/s (malathion)
Noise N ≤ 2 × 10-13A
Working conditions
Power supply
220V, 50Hz
Environmental temperature
15 ℃~35 ℃
Environmental humidity
5%~95%
Furnace size
28×30×17cm
Operating temperature range
above room temperature to 450 ℃
Temperature setting accuracy
0.01 ℃
Programmed heating rate
33℃/min
The longest method run time
999.99 minutes
Program heating order
8 orders