The principle of UV detection is based on the difference between the measured components and the absorbance of the electrolyte. When the detected component passes through the detection window, the change in absorbance obeys the Lambert-Beer law, that is, the absorbance and the concentration of the measured component under certain experimental conditions. In direct proportion.
The nucleic acid protein detector and the ultraviolet detector are all detection devices in liquid chromatography, and the instrument is equipped with a chromatography column, a constant current pump, a partial collector, etc., which constitute a complete liquid chromatography separation analysis system. It can be applied to modern biological research, pharmaceutical determination, agricultural research, chemical, food and medical units for quantitative analysis of samples with UV absorption.
At present, there are only more than 20 manufacturers of nucleic acid protein detectors and UV detectors in China, such as Shanghai Jinda, Shanghai Jiapeng, Wenzhou Orly, Shanghai Huxi, Shanghai Qi Te, etc., and the brand of the product is only 6 Around the home, for example: the United States HOEFER, the United States cole-parmer, the United States thmorgan, the United States beckman, Tokyo physics and so on, in fact, although there are imported nucleic acid protein detectors and UV detectors, but basically more domestically produced, basically imported Laboratories, research institutes, and universities will not buy them, because our domestic products can completely replace imported ones, but there are still some universities that are very strict in experimentation and like to import brands. The institute is still willing to buy imports.
Next, let's talk about the price of these two instruments. The prices of these two instruments are very transparent in the market. As usual, the basic price of nucleic acid protein detectors is around 9,000 yuan, basically the transaction price with customers. It is also around 6800, and the UV detector is much more expensive than the nucleic acid protein meter. His price is generally around 18,000, and the transaction price is also around 15000, 12000. Why is the price of the UV detector higher than that of the nucleic acid protein detector? The key is the wavelength of the two instruments: the nucleic acid protein detector is a two-band: wavelength: 254, 280 nm. The UV detector is a four-band detector with wavelengths of 220, 254, 280, and 340 nm. In fact, if the experimental requirements are not very strict, the accuracy of the test results is not high, UV detection can replace the nucleic acid protein detector, because he can measure some data in a rough way, but he can not achieve very accurate measurement results. . The nucleic acid protein detector is based on some principles of the ultraviolet detector to specifically measure the nucleic acid and protein content in the DNA/RNA, and the measurement result is accurate and can be seen at a glance.
Next is the price of some of our products, for reference only
name | model | Place of origin | price |
Ultraviolet detector | UVD-680-1 | Shanghai | 6500 |
UVD-680-2 | 6500 | ||
UVD-680-2F | 16300 | ||
High performance dual beam UV detector | UVD-680-3 (two wavelengths) | 9800 | |
Ultraviolet detector | UVD-680-3 (four wavelengths) | 10900 | |
DWD-1 (dual wavelength | 11900 | ||
HDL-A combination (2 wavelengths) | 12600 |
Nucleic acid protein detector | HD-97-1 | Shanghai | 5800 |
HD-1 | 5800 | ||
HD-21C-A | 6200 | ||
HD-21C-B | 6350 | ||
HD-4 (chromatography workstation) | 8900 | ||
Ultraviolet detector | HD-3 | 6120 | |
HD-97-1 | 6250 | ||
HD-21C-A | 6380 | ||
HD-21C-B | 6660 | ||
HD-5 (chromatography workstation) | 9590 |
Nucleic acid protein detector | HD-3005 | Shanghai | 7920 |
HD-97-1 | 5490 | ||
HD-3007 | 11400 | ||
HD-2004 | 5940 | ||
HD-2000 | 5725 | ||
Computer nucleic acid protein detector | HD-2001-BC | 5580 | |
Computer ultraviolet detector | HD-3000 | 8880 |
Nucleic acid protein detector | WZ-1 | Zhejiang | 6900 |
WZ-3 | 7162 | ||
Computer citrate protein detector | WZ-5 | 10485 | |
Intelligent nucleic acid protein detector | WZ-7 | 11625 | |
Double beam nucleic acid protein detector | WZ-8 | 13500 | |
Ultraviolet detector | WZ-2 | 5587 | |
WZ-6 | 10875 |
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