The second-hand GC1122 gas chromatograph sold by Tengzhou Zhongkepu is a high cost-effective chromatograph produced by the former Shanghai Analytical Instrument Factory. The instrument has been independently developed, produced, and sold for over 1000 units

GC1122 gas chromatograph equipped with hydrogen flame detector, capillary gasification chamber, capillary column, and chromatographic workstation

Technical parameters:

temperature control
Temperature control range: 7 ℃~400 ℃ at room temperature (incremental 1 ℃)
Temperature control objects: column box, detector, thermal conductivity cell, sampler, auxiliary
Number of ascending orders: Five orders
Cheng Sheng rate: 0.1 ℃~40 ℃/min (incremental 0.1 ℃)
Constant temperature time: 0-655min (incremental 1min)
Hydrogen flame ionization detector (FID)
Sensitivity: M ≤ 1 × 10^-11g/s(C₁₆)
*Test result: M ≤ 5 × 10^-12g/s(C₁₆)
Noise: ≤ 5×10^-14A
Drift: ≤ 6×10^-13A/h
Linear range: ≥ ten⁶
Thermal conductivity detector (TCD)
Sensitivity: ≥ 2500mV﹒mL/mg(C₁₆)
Noise: ≤ 20µV
Drift: ≤ 30µV/h
Zui high sensitivity: ≥ 10000mV · mL/mg (optional electronic amplifier board)
Linear range: ≥ ten⁴

Main features:

High precision dual stable gas path
The air flow path adopts a dual stability design of stabilizing valve and stabilizing flow valve; The air and hydrogen flow paths adopt a stable regulation mode of stabilizing valve and needle valve. Both the stabilizing valve and needle valve use digital scale knobs, which have the characteristics of high precision, good repeatability, high reliability, and convenient and intuitive flow regulation.
High performance and large capacity column box
The large capacity column box can be easily installed and can accommodate both capillary columns and double packed columns simultaneously; The column box has a rapid heating and rapid cooling automatic rear door opening mechanism, and can achieve quasi room temperature control. The column box is programmed to heat up in 5 stages and 6 platforms.
Flexible injection system to meet various analysis requirements
The instrument can be installed with up to three injectors at the same time. According to analysis requirements, the instrument can choose a combination of injectors, and each unit can be independently temperature controlled. The disassembly and assembly of injectors are simple and convenient.
Single filled column/double filled column sampler:
Can achieve filling column head injection method, suitable for various chromatographic columns; Add a six way valve for gas injection analysis; By using connectors in the packed column sampler, it is easy to perform analysis on a 0.53mm wide caliber capillary column.
Provide three types of capillary column injection systems, all suitable for various specifications of capillary columns:
a) Use connectors to retrofit a capillary column injector onto a double packed column injector, with back pressure valve diversion adjustment;
b) Capillary column sampler with diaphragm blowing and back pressure valve diversion regulation.
c) Capillary column splitter/non splitter injector, independent carrier gas flow path and tail blowing gas flow, with diaphragm blowing and back pressure valve splitter adjustment, inlet cleaning solenoid valve, and time program to achieve capillary column splitter/non splitter injection.
*The control function of microcomputer system
1. The performance microcomputer temperature control system adopts * control technology, with high temperature control accuracy (better than ± 0.05 ℃), high reliability, and strong anti-interference ability; It has 5 independent temperature control zones, with the highest control temperature reaching 400 ℃; The extreme temperature setting and over temperature protection function ensure the safe operation of the instrument.
2. Set various control and usage parameters (including detector operation parameters) using a fully Chinese keyboard, with strong logic and easy operation; The instrument has functions such as self diagnosis, power-off protection, storage and retrieval of 10 method files, control of 2 external events, timed start and stop of temperature control, time program, detector setting, range, polarity and current setting and display. It can accurately display various temperature control settings, actual values, retention and analysis time, etc.
High sensitivity and high stability detector
The instrument can install up to 3 detectors simultaneously, such as FID, TCD, ECD detectors, etc.
By using different combinations according to different analysis applications, it is easy to achieve the series and parallel operation of detectors.
The new FID has a lower detection limit, making it easy to disassemble and clean the nozzle and ion collection components. The precisely fixed emitter installation structure ensures the high performance of each instrument.
High sensitivity TCD uses high resistance rhenium tungsten wire, and with the optional thermal conductivity amplification plate, the sensitivity can reach up to 10000mV • mL/mg. The air insulation structure of * makes TCD more stable.
Modulation pulse type ECD constant current source, with sensitivity and current selection computerized.

The company provides a complete set of electronic operation manuals for the GC1122 Shanghai second-hand gas chromatograph