Guangzhou Jingying Scientific Instrument Co., Ltd.

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Guangzhou Jingying Scientific Instruments Co., Ltd. grandly launched a breakthrough product

the forensic diatom inspection method microwave digestion vacuum suction microscopy (ga/t) and related equipment, which was developed by the founder of the company and won the national science and technology progress award, have been widely used in the country with significant social benefits, but technological innovation is endless because of their progressiveness and practicality, Adhering to the business philosophy of "competition, innovation and win-win cooperation", aiming at the shortcomings of low automation, time-consuming and high work intensity of detection personnel in diatom detection, the company organized the R & D team to carry out technical research. After more than a year of efforts, the company jointly developed a breakthrough product with American fluid imaging company and Beijing oshi Technology Co., Ltd. - fully automatic forensic diatom detection system

the technical principle of this product is: elute the filter membrane obtained after microwave digestion and vacuum filtration, and the eluent is injected into the analysis system as a sample. Once the sample flows through the micro circulation cell (sample detection area) graphene for 1 day to realize industrialization, its output value is at least more than trillion yuan, The high-speed micro camera automatically gathers these new generation (3D printing) materials, which can not only make the aircraft more economical, but also take photos at the speed of up to 120 frames/second. The intelligent data analysis software intercepts the micro images of particles in the photos in real time, and automatically identifies and classifies diatoms. When the sample analysis is completed, the qualitative and quantitative analysis report of diatoms is automatically output. The diatom inspection method based on the principle that the diatom has shown better lasting shaping effect has applied for a national invention patent

1. Compared with the method of using conventional optical microscope or scanning electron microscope to detect diatoms, the outstanding advantages are:

1. Full automation. There is no need to identify diatoms manually, which greatly reduces the working intensity and human error; It is easy to learn, and the inspectors can operate independently after half a day of training

2. High efficiency. It takes only a few minutes to 20 minutes to analyze a single sample, while it usually takes hours to detect by light microscope or scanning electron microscope

3. Powerful data processing function. More than 40 kinds of morphological information of diatoms and the distribution of diatoms of various shapes and sizes can be obtained. It is a powerful tool for studying the distribution law of diatoms in cadaver organs and tissues in water and other related research

4. The system library can be expanded. The newly collected diatom images can be added to the library of the species to increase the capacity of the library and improve the accuracy of diatom automatic recognition and classification. Users can build a new library according to their needs

full automatic forensic diatom detection system equipped with automatic sampler

II. Product technical parameters

1. The patented optical system is used to capture diatoms in flowing samples, automatically analyze the species and content of diatoms, and realize the automation of qualitative and quantitative analysis of diatoms

2. Provide the experimental results of the effective diameter of the captured diatoms, which can automatically save more than 40 kinds of morphological information, such as length, width, aspect ratio, and the distribution of diatoms of various shapes and sizes

3. Using high-resolution CMOS camera, 1920 × 1200 pixels

4. Image type/format: color, jpg

5. Shooting speed: up to 120 frames/second

6. Magnification/flow cell/camera shooting range:

a, 20x objective lens (total magnification ≅ 200X); Circulation tank (thickness):50 μ m; Camera shooting range: 675 μ M (height) × four hundred and twenty-two μ M (width)

b, 10x objective lens (total magnification ≅ 100x); Circulation tank (thickness):100 μ m; Camera shooting range: 1351 μ M (height) × eight hundred and forty-four μ M (width)

7. Automatic sampler can be selected to realize automatic completion of multi sample analysis. Automatic sampler: 96 hole plate, 2 positions, with automatic oscillation, heating and cooling functions, and the sample volume of a single hole is 5 μ l-1000 μ l. Equipped with automatic injection management software

8, automatic cleaning pipeline to avoid pollution

9. It contains common diatom library, which can be expanded and self built as needed; The software has intelligent learning ability. With the increase of the library capacity, the accuracy of diatom automatic recognition and classification continues to improve

10, desktop, easy to carry. Host size: 38cm (height) × 36cm (width) × 44cm (deep)

III. actual cases show that

diatoms detected in organ tissues of drowning victims

2g diatoms detected in lung tissues

10g diatoms detected in liver tissues

10g diatoms detected in kidney tissues

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