Function and use

1. Used to detect the residual solvent of packaging and printing materials.

2. Used to detect the purity and content of solvents.

Detectable substances: benzene, cyclohexanone, xylene, ethanol, ethylbenzene, isopropanol, propanol, butanol, ethyl acetate, isopropanol acetate, n-butanol, toluene, n-butyl acetate, aniline phosphorus, 4-methyl 2-pentanone, etc.

Test principle

The basic principle of gas chromatograph is: gas, liquid or solid samples are sent into the chromatographic (separation) column system through the vaporization chamber through a certain injection method, and the mixture components in the sample flow through the chromatographic column driven by the carrier gas (N2). The components in the sample are separated under the action of the stationary phase in the chromatographic column. The separated single component enters a system called a detector with the carrier gas. Each component obtains non-electrical quantity conversion in the detector, converting the chemical component into an electrical signal (current or voltage) proportional to its concentration. These electrical signals corresponding to each component are sent to the recording instrument or data acquisition and processing system, and the components in the mixture can be qualitatively and quantitatively analyzed.

Comply with standards

QBT 2929, GB/T 10004, YBB 00132002

Instrument features

1. 7-inch color touch screen, intuitive human-computer interaction interface, easy to understand, easy to operate;

2. Multiple commonly used detectors can be selected at the same time;

3. Large-capacity column box with automatic rear door opening for rapid cooling, program heating, column box near room temperature control function (5°C above room temperature);

4. Can be configured with packed column injector, capillary column injector, automatic liquid injector, gas valve injector, nickel converter, thermal desorption injector, headspace automatic injector, thermal cracking injector and other devices;

5. With fault self-diagnosis function, display the fault location and nature at any time; with over-temperature protection function, any temperature exceeds the set temperature, will automatically stop heating and alarm.

6. Economical and practical, cost-effective;

7. Simple structure, easy to install and operate;

8. Can be connected to the chromatographic workstation, the experimental results are intuitive and clear;

9. Advanced noise suppression system, the chromatographic can completely eliminate fan noise in the working state, creating a comfortable and quiet working environment;

10. Flexible filling column and capillary column injection port design, can be selected according to actual conditions; wide column box, for complex analysis tasks, convenient for the use of a variety of chromatographic columns, broadening the range of analytical samples;

11. Using microcomputer control, human-computer dialogue to draw various required temperatures column box temperature control range (room temperature + 10 ℃) -300 ℃, temperature control accuracy of 0.1%;

12. Overheat protection function: can be set in any range of 400 ℃, software program protection, hardware circuit double insurance protection.

Technical parameters

1. With hydrogen flame ionization detector (FID). When using the instrument, different injection devices can be used according to different samples: liquid sample: use micro (μl) syringe injection; gas sample: use six-way valve injection.

2. When the instrument is working, three gases need to be passed:

① Carrier gas: generally nitrogen (N2), purity ≥99.99%;

② Combustion gas: hydrogen (H2), purity ≥99.99%;

③ Combustion-supporting gas: air (Air), air after purification and deoiling.

3. Detector sensitivity: Hydrogen flame detector FID detection limit: Mt≤1×10-11g/s (nC16).

4. Stability (FID): baseline drift ≤0.2MV/0.5h, noise ≤0.2MV.

5. Thermal conductivity cell: sensitivity S value ≥2500mV·ml/mg (benzene).

6. Stability (TCD): baseline drift ≤25μV/0.5h, noise ≤10μV.

7. Quantitative repeatability RSD: ≤1%.

8. Column box temperature control range: room temperature +5℃~300℃.

9. Program heating rate 0.1~25℃/min, column box cooling rate: ≤9min (from 300℃ to 70℃).

Instrument configuration

One chromatographic host, one chromatographic column, one data workstation, one sealing clamp, one set of installation accessories (see the list for details)