Inspection laboratory precision testing instruments

Inspection laboratory precision testing instruments

Testing laboratory equipment for chromatographic separation and analysis, including sampling system, detection system, recording and data processing system, temperature control system and mobile phase control system, etc. Modern chromatographs have stability, sensitivity, multi-purpose The characteristics of high degree of sexuality and automation; real...

Text label: inspection laboratory, precision testing equipment, design, construction and installation

Inspection laboratory precision testing instruments

Testing laboratory equipment for chromatographic separation and analysis, including sampling system, detection system, recording and data processing system, temperature control system and mobile phase control system, etc. Modern chromatographs have stability, sensitivity, multi-purpose The basic structure of the laboratory gas chromatograph has two parts, namely the analysis unit and the display unit. The former mainly includes the origin and control metering device, the sampling device, the thermostat and the chromatographic column, and the latter mainly includes The calibrator and automatic recorder, the chromatographic column and the calibrator are the core components of the color chromatograph. Ion chromatography is a kind of high performance liquid chromatography, which is a liquid chromatography method for analyzing anions and cations. This method has the advantages of good selectivity, sensitivity, rapidity, simplicity, etc. The typical structure is composed of an infusion pump, an injection valve, a chromatographic column, a suppression column, a detector and a data processing system; the commonly used injection method of the injection valve is the six-way valve injection, which has a variable range of injection volume Large, high-pressure resistant, and easy to realize automation; infusion pump, double-head reciprocating pump is a very commonly used infusion pump. There is a time difference in the movement of the ion chromatograph, which just compensates for the pulse output by the mobile phase, so the flow rate is quite stable; the main component of the separation system is the chromatographic column, which is the place where the stationary phase is stored during the chromatographic separation process, and the column packing of the ion chromatograph is the particle chromatograph. The characteristics of ion chromatograph are the main driving force for the development of ion chromatograph, and the development is fast.

The mass spectrometer is based on the ion source, mass analyzer and ion detector. According to the principle that charged particles can be deflected in the electromagnetic field, it separates and detects the composition of matter according to the mass difference of atoms, molecules or molecular fragments. The ion source is a device that ionizes the sample molecules under high vacuum conditions. The ionized molecules will be further fragmented into various fragment ions and neutral particles of smaller mass due to excessive energy received. Under the action of the accelerating electric field, the average kinetic energy with the same energy is obtained and enters the mass analyzer; there are various types of ion sources, mass analyzers and particle detectors. Mass spectrometers are divided into high-resolution, medium-resolution and low-resolution mass spectrometers according to their resolving power, and are divided into static instruments and dynamic instruments according to their working principles. The organic mass spectrometer ionizes the measured substance by electron bombardment or other methods to form ions of various mass-to-charge ratios, and then uses electromagnetic principles to separate ions according to different mass-to-charge ratios and measure the intensities of various ions to determine The relative molecular mass and structure of the measured substance; the organic mass spectrometer is mainly used for the structural identification of organic compounds, and can provide structural information such as the relative molecular mass, element composition and functional group of the compound. The difference between inorganic mass spectrometers and organic mass spectrometers is the way of ionization of substances. Inorganic mass spectrometers ionize the measured substances by inductively coupled high-frequency discharge or other methods. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for laboratories and sterile workshops.

Lab spectrometer is a scientific instrument that decomposes complex light into spectral lines. It is composed of prisms or diffraction gratings. The spectrometer can be used to measure the light reflected from the surface of the object; the seven-color light in sunlight is visible to the naked eye, but If the sunlight is decomposed by a spectrometer and arranged by wavelength, visible light only occupies a small range of the spectrum, and the rest are spectrums that cannot be distinguished by the naked eye, such as infrared, microwave, ultraviolet, X-ray, etc. The light information can be captured by the spectrometer. Take and develop with a photographic film, or computerize and automatically display the results of numerical instrument analysis, so as to detect what elements are contained in the article.

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