Price of Shanghai headspace sampler

Shanghai Headspace Sample Injector Classification:

At present, the headspace samplers produced domestically and internationally can be divided into the following three categories: manual headspace samplers, fully automatic headspace samplers, and semi-automatic headspace samplers.

Shanghai headspace sampler manual type:

Equipped with a constant temperature furnace with several heating holes and an airtight glass syringe with insulation cover. The characteristic of this device is that it is inexpensive, and the usual price should be in the thousands of yuan. However, the repeatability of the injection results * depends on the operator's experience and level. In addition, the temperature range is limited by the material of the glass injector and cannot be too high.

Shanghai headspace sampler semi-automatic type：

Having a constant temperature furnace headspace bottle requires users to manually place them one by one into the furnace to balance. After the equilibrium time is up, there is a process of manually inserting the sampling needle into the headspace bottle. The process of sampling and injection is controlled by the machine's own sequence, and the sampling and injection system can set the temperature to prevent the sample from condensing during transportation.

Headspace sampler fully automatic type:

After the headspace bottle is sealed, it is manually coded and placed on the conveyor belt or turntable. The headspace bottle will enter the constant temperature furnace according to the user's pre-set time sequence, and after the constant temperature time is up, the mechanical arm automatic sampling system will automatically inject the sample.

The method of headspace injection:

1.Manual injection (water bath method)

After heating the sample, use a syringe to extract it directly for chromatographic injection

2.Gas tight needle injection

The sample reaches thermal equilibrium by heating the airtight needle to extract the sample and inject it into the gas chromatograph

3.Quantitative ring pressurization system

After the sample is heated to equilibrium, it is pressurized into the quantitative loop and injected into the gas chromatograph through valve control

4.Headspace sampler

Using instruments to achieve headspace injection through blowing and constant pressure

Comparing four injection methods, headspace analysis is an ideal sample purification method Traditional liquid-liquid extraction and SPE involve dissolving the sample in a liquid, inevitably leading to some co extracted substances interfering with the analysis Moreover, the purity of the solvent itself is also an issue, which is particularly important in trace analysis Using gas as a solvent can avoid unnecessary interference, which can prevent the loss of volatile compounds during solvent removal and reduce the noise caused by co extraction. It has higher sensitivity and analysis speed, less harm to analysts and the environment, and is easy to operate. It is an analytical method that meets the requirements of "green analytical chemistry".

Shanghai Xuansheng Scientific Instrument Co., Ltd. specializes in the production of laboratory equipment such as gas chromatographs, liquid chromatographs, gas generators, and headspace samplers. We warmly provide you withPrice of Shanghai headspace samplerguidance