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 ★Awarded the Important New Product of Our Country
★Kechuang gas chromatograph is honored by Chinese Analysis Testing Association the 2001 Year Ten-big Well-known Chromatography Brand
★Honored by Chinese Analysis Testing Association the 2001 Year BCEIA Gold Prize
★Honored the Excellent New Third Prize of Shanghai
★Honored the Science and Technology Progress Second Prize of Shanghai
Specialty
·Microcomputer keyboard operation (temperature control, signal attenuation, auto-baseline-zero, flux show and so on);
·Having three kinds of high-performance detectors to be chosen at the same time (FID, ECD,TCD or FPD);
·Micro-thermal conductivity detector (MTCD) could equip with packed column and capillary column at the same time;
·New-style electronic mass flowmeter and gas flux displaying;
·High-precise temperature control (0.1℃), protection function and fault indication function;
·Protect messages when the power shuts down;
·Fast heat and cool the oven temperature, only need 6-7 minutes from 300℃ to 100℃, can control near indoor temperature.
Technique Performance
Detector sensitivity
·TCD-1 S≥3000mV.mL/mg (benzene)
·FID D≤1×10-11g/s（nC16）
·ECD D≤1×10-13g/s（γ-666）
·FPD D≤5×10-12g/s（P）
Stability
·TCD Baseline Shift≤30μv/0.5h, Baseline Noise≤10μv
·FID Baseline Shift≤6×10-13A/0.5h
·Noise≤1×10-13A
Temperature control
·Temperature Control Accuracy: ±0.1℃
·Column Box Temperature: 6℃-400℃ above indoor temperature
GC900A gas chromatography
GC900A gas chromatography is a kind of homemade high performance gas chromatography with absolute self-design and self-produce. It has obtained prodigious progress. The following characteristics reflect the innovative and advanced speciality.
(1) In many operations, microcomputer, touch and keystoke ways have been adopted, such as setting and controlling four roads temperature, adjusting detector sensitivity, adjusting signal attenuation, zeroing the baseline, displaying the flux of carrier gas, adjusting the positive and negative direction of signal, setting the supper temperature protection, stopwatch function and so on. Those ways can be used conveniently and operated simply and reliably. (The technique keeps ahead in China.)
(2)The sensitivity of detector is high. Specially, the subminiature thermal conductivity cell detector (made by Kechuang Company) can be used with capillary column and it makes the analytic technique of our country attain the international advanced level. Kechuang subminiature thermal conductivity cell detector can be connected with one packed column and one capillary column at one time, so people can use packed column and capillary column at the same time. (The technique initiates in China.)
(3) The bran-new double electron quality flowmeter is applied in homebred instrument for the first time. It not only can carry out the digitalization measure of double carrier gas flux but also can expediently measure diffluent flux, membrane gas flux and the optimal rate of N2 and H2 (FID used). It enhances flux measure precision in gas chromatograph technique consumedly and can be used and operated expediently. (The technique is unique in China.)
(4) The four high accurate temperature control guarantees the high accurate qualitative and quantitative analytic data. Not only its temperature control precision surpasses±0.1℃, but also it can show the discrepant value of appointed temperature and actual temperature and the resolution can attain 0.01℃ which is the 10 times compared with general domestic instrument. (The technique keeps ahead in China.)
(5)The great capacity column box which is same as HP5890A not only is convenient, but also the temperature can decline quickly and automatically after temperature programming and it needs 6-7 minutes to decline from 300℃ to 100℃automatically, and that it can carry out the near indoor temperature control above 6 ℃ of indoor temperature because of the combination of column box postern structure design and advanced microcomputer electrocircuit. The important performance shows that it has already come to international advanced level nowadays. (The technique keeps ahead in China and comes to international advanced level.)
(6) The anti-power-break function can avoid key-press operation again after the instrument is disturbed by unexpected instantaneous power cut. It can guarantee that the instrument may run continuously and reliably under the unmanned circumstance. In addition, time control function, various protection functions, self-diagnoses function, stopwatch function, extensible function etc. all make the instrument come to the advanced level of importation. (The technique is unique in China.)
All above characteristics of homemade gas chromatography have already showed that The Kechuang GC900A high performance gas chromatography can replace the same kind importation completely in many actual applications. It is the unique gas chromatography that has been awarded the important new production of our country. GC900A gas chromatography had been chosen as the scientific instrument to aid foreign after Chairman Jiang Zemin visiting Ukraine and it has acquired good application in many ways in Ukraine at present, such as national environmental protection, poisonous article, health graduate school and national feme- enfant health care hospital.
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