The GC-9860 classic multi-purpose gas chromatograph is currently one of the most typical gas chromatographs in China. It adopts electronic information technology and has unique features in temperature control, instrument fault self diagnosis, data protection, and other aspects.It is a high-performance and cost-effective chromatograph controlled by a dual core CPU system, which can be equipped with five detectors including thermal conductivity cell (TCD), hydrogen flame ionization (FID), electron capture (ECD), flame photometry (FPD), nitrogen phosphorus (NPD), etc. It can be equipped with packed column and capillary column, and can perform constant temperature and programmed temperature operation. The whole machine adopts advanced integrated circuits and components, achieving high reliability and stability, simple operation, and convenient maintenance,It is widely used in health and epidemic prevention, food hygiene, environmental testing, quality supervision, petrochemical industry, fine chemicals, pesticides, pharmaceuticals, commodity inspection, power, Baijiu, mining and other systems, as well as scientific research institutions, colleges and universities.

1、 Working conditions:

1. Environmental temperature: 5 ℃ -35 ℃

2. Relative humidity: below 85%

3. Power supply voltage: 220V ± 22V

4. Power supply frequency: 50HZ ± 0.5HZ

5. * * Power consumption: 2000W

6. There is no strong electromagnetic field interference, no corrosive gases, no strong vibrations, no drastic changes in indoor temperature, and no significant convection in the air.

2、 Technical performance

1. Temperature control:

(1) Column temperature:

·Temperature control range: room temperature plus 5 ℃ -400 ℃ (set in increments of 0.1 ℃).

·Temperature control accuracy: not greater than ± 0.1 ℃.

·Temperature gradient: not greater than ± 1% within the effective area of the column.

·Program temperature rise: 5th level.

·Variable frequency intelligent automatic rear door cooling function.

·Heating rate: 0.1-40 ℃/min. (Set in increments of 0.1 ℃).

·Cooling rate: The time for the column chamber temperature to drop from 280 ℃ to 50 ℃ shall not exceed 5 minutes.

·Time setting: 0.1-9999.9 (increments of 0.1 minutes).

(2) Temperature control of thermal conductivity detector:

·Add 20 ℃ to 400 ℃ at room temperature.

·Temperature control accuracy: not greater than ± 0.1 ℃.

(3) Temperature control of other heating units:

·Add 20 ℃ to 400 ℃ at room temperature.

·Temperature control accuracy: not greater than ± 0.1 ℃.

2. FID detector

(1) The detection limit is not greater than 2 × 10－11G/s (benzene)

(2) Noise: not greater than 0.02mv

(3) Drift: not greater than 0.15mv/h.

(4) Start time: no more than 1 hour.

3. TCD detector:

(1) Sensitivity: S ≥ 3000mv.ml/mg. (Benzene, H)2）

(2) Noise: not greater than 0.02mv.

(3) Drift: not greater than 0.15mv/h.

(5) Start time: no more than 2 hours.