Gas Chromatograph

A gas chromatograph (GC) is an analytical instrument that measures the content of various components in a sample. The analysis performed by a gas chromatograph is called gas chromatography.

Principle of gas chromatography: The sample solution injected into the instrument enters a gas stream which transports the sample into a separation tube known as the "column." (Helium or nitrogen is used as the so-called carrier gas.) The various components are separated inside the column. The detector measures the quantity of the components that exit the column. To measure a sample with an unknown concentration, a standard sample with known concentration is injected into the instrument. 

GC-7860 Plus/B Gas Chromatograph

Gas Chromatograph GB-7860 PLUS

Gas Chromatograph Features

  • 5.7” large LCD screen for GC-7860 Plus gas chromatograph , and Color Touch Screen is optional for this model. Vacuum Fluorescent screen for GC-7860 B, with easily operated keypad.  
  • Gas path control: manually or EPC(Electronic Pressure Control), network communication(Ethernet interface IEEE802.3), Computer-controlled operation.
  • EPC Mode. Precision 0.01ml/min or 0.01Kpa, which ensures better time reproducibility and more reliable results.

  1. EPC work mode: constant current, constant pressure, split.
  2. Pressure control: 4th
  3. EPC work gas: N2, H2, Air, He, Ar.
  4. EPC control range: Pressure 0-0.6Kpa, Flow 0-100sccm or 0-500sccm.
  5. EPC control accuracy: Pressure 0.01Kpa, Flow 0.01sccm.

  • Support double ovens, double back doors.
  • Oven Temp increment 1 C degree, accuracy +/-0.01 C degree.
  • Versatile Injection Mode: Packed column, Capillary split/non-split, Valve, Liquid Automatic Injection, Automatic Head-space Injection, Cracking, Thermal Desorption Injection, Purge and Trap.
  • GC-7860 Plus can be equipped with 3 detectors, GC-7860 B can be equipped with 2 detectors: Optional detectors are: HCD, HTCD, UTCD, FID, FPD, ECD, NPD, ZD, PDHID, PID, AID.
  • Customerized Valve available, which can help users to fulfill complicated multi-dimensioal chromatographic analysis task.
  • The program support multi-flow sample to choose MPV system, which has functions of recognizing number of valves automatically, automatic on-line judgment, valve position selection, valve position analysis memory, max 32 paths of sample flow can be supported.
  • Temperature control technical parameters:

  1. Temperature control path number: 8
  2. Oven Temperature parameters:
  3. Oven temperature range: 4℃ -450℃ above room temperature.
  4. Oven temperature resolution: +/-0.01℃.
  5. Program ramps: 16.
  6. Program setting: 0.1-39℃/min(Common type), 0.1-80℃/min(High speed type)
  7. Constant temperature time of each program: 0-999min(Increment 0.1min)
  8. Cool-down time: 260℃ to 50℃ in 6 minutes.
  9. Sampler/Detector/Thermal Conductivity Cell
  10. Temperature range: 4℃-450℃(Increment 1℃) 
  11. Temperature accuracy: +/-0.01℃.

Gas Chromatograph GC-7860B

Gas Chromatograph GC7860B

Gas Chromatograph GC7860B KEYPAD

Gas Chromatograph GC 7860B Keypad