GC9890B Gas Chromatograph

* Key Features

1. A friendly human-machine dialogue interface makes your operation simpler.

2. Divertible/Non-divertible Sample Systems for Flexible and Convenient Analysis

3. Equipped with a dual-valve control system for easy implementation of online automatic sampling.

4. The EFC (Flow) system makes your flow clear at a glance and allows for accurate gas flow setting.

5. Testing and Fault Diagnosis System, enabling you to quickly identify and resolve issues with the equipment.

6. Expanded temperature control range: environmental temperature from +5℃ to 450℃, broadening the sample analysis scope.

7. Compatible with the installation of the U.S. HP-5890 Gas Chromatograph's Microbial Conductivity Detector, enabling seamless connection.

8. Gas Cut-off Protection System, capable of greatly preventing damage to detectors and chromatographic columns.

9. The column box can be equipped with a low-temperature control system, capable of maintaining temperatures down to -80°C, to meet your needs for analyzing low-boiling point substances.

10. The inter-column compensation circuit ensures electronic compensation for baseline drift during program heating operation, as well as the complexities introduced by the detector and auxiliary flow system. Two single-column compensation channels can be installed simultaneously.

Column Temperature System

Temperature Range: +5℃ to 450℃ ambient temperature

Three-stage program heating, heating rate 0～50℃/min; increment 0.1℃/min. Temperature control accuracy ±0.015℃。

Users can recalibrate the furnace temperature and set the required temperature.

The intelligent rear door system features stepless adjustable air volume for intake and exhaust, reducing the time for the system to stabilize and balance after heating or cooling. The column box takes less than 12 minutes to cool down from 300℃ to 50℃.

﹡ Sample Submission System

1. Filling Column Injector: Suitable for various inner diameters of filling columns and large-bore capillary columns.

2. Capillary Sampler: Optional split/continuous flow injection system with programmable valve control.

3. Optional: compatible with Shanghai Hesta's headspace sampler and thermal desorption instrument.

Detector System

1. Hydrogen Flame Ionization Detector (FID)

Easy to disassemble and install, convenient for cleaning or replacing nozzles; simple operation; input signals can be logarithmically amplified, reducing interference, with high sensitivity, good linearity, and wide measurement range.

Detection Limit: Mt ≤ 5×10^-12 g/s (n-hexadecane)

Baseline Noise: ≤ 6×10^-12 A/H

Linear Range: ≥105

Stable Time: ＜ 0.5h

2. Thermal Conductivity Detector (TCD)

Sensitivity: ≥5000 mv?ml/mg (n-hexadecane)

Micro-pool Amplification ≥ 10000 mV?ml/mg (n-hexadecane)

Baseline Noise: ≤30μV (carrier gas: helium 99.999%)

Stable Time: C-type <1.5h

3. Flame Photometric Detector (FPD)

Detection Limit: Phosphorus Mt ≤ 5×10^-12 g/s (Ethyl-1605)

Sulfur content ≤ 1×10^-11 g/s (thiophene)

4. Electron Capture Detector (ECD)

Detection Limit: Mt ≤ 1×10^-13 g/ml (r-666)

5. Nitrogen-Phosphorus Detector (NPD)

Detection Limit: Phosphorus measurement ≤ 5×10^-12 g/s (Malathion)

Nitrogen measurement: Mt ≤ 5×10^-12 g/s (Azobenzene)

Instrument exterior dimensions

450mm*450mm*600mm                     46KG