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Shanghai Haozhuang Instrument Co., Ltd. develops the LNB brand nitrogen blower, which is energy-saving and environmentally friendly, leading the country. The heating method of LNB brand dry nitrogen blower is as follows:
Hao Zhuang (LNB) brand NDK200-2 dry nitrogen blower is mainly used for the concentration or preparation of large batch samples (such as drug screening, hormone analysis, liquid phase, and mass spectrometry sample preparation. Working principle: by blowing nitrogen Into the surface of the heated sample to quickly evaporate and separate the solvent in the sample, so as to achieve the purpose of anaerobic concentration of the sample and keep the sample more pure. Use a nitrogen blower to replace the commonly used rotary evaporator for concentration, which can simultaneously concentrate dozens of samples , Time-saving and efficient.
Dry nitrogen blowing instrument heating characteristics:
1. The heater quickly heats the sample to the evaporation temperature, and at the same time, the gas is blown to the surface of the solution through the gas needle to promote the rapid evaporation of the solution and the concentration of the sample.
2. The position of the gas needle in the gas chamber can be changed to make it suitable for different test tubes.
3. The height of the air cavity can be adjusted, and the standard air needle length is 150mm.
4. There are 12 airway control switches, which do not waste gas.
5. When concentrating toxic solvents, the entire system can be placed in a fume hood.
6. Built-in over-temperature protection device, automatic fault detection and alarm function.
7. LED display, temperature synchronous display, time decreasing display, simple and convenient operation.
8. Standard equipped with air cavity and special adjustable bracket.
The heating method of Hao Zhuang (LNB) brand water bath nitrogen blower is as follows:
Hao Zhuang (LNB) brand water bath nitrogen blower is used for sample preparation in gas, liquid and mass spectrometry analysis. It uses internationally recognized technology to concentrate the sample by blowing nitrogen onto the surface of the heated sample. This method has the characteristics of time-saving operation, easy control, etc., and the expected results can be obtained quickly. This technology uses solid phase extraction pretreatment technology to replace the traditional liquid phase extraction and chromatography technology, so that the sample can be quickly separated and purified. Nitrogen blowing is used to replace the commonly used rotary evaporator for concentration, which greatly shortens the analysis time.
The DN-12A and DN-24A nitrogen blowing devices produced by the company use aluminum heat blocks as bathrooms, which have good heat transfer and uniform heat transfer, which is beneficial to rapid heating and rapid temperature control. Nitrogen is blown onto the surface of the sample to achieve anaerobic concentration of the liquid sample. The blowpipes are independent of each other and will not cause cross contamination.
Comparison of heating methods between dry nitrogen blower and water bath nitrogen blower:
1. Water bath heating usually puts the test tube to be heated in a beaker holding water, the heat source heats the water, and the water transfers the heat to the test tube, which can be regarded as an indirect heating process, which is different from the dry direct contact heat source heating In addition, during the heating process of the water bath, a thermometer can be inserted in the water of the beaker to observe the water temperature in real time so that the temperature of the water can be well controlled. The dry heating method is difficult to achieve real-time temperature control.
2. During the heating process of the water bath, the test tube is immersed in the water in the beaker, and all parts are heated more evenly; while the dry heating method usually heats the bottom of the test tube more than the middle and upper parts.
3. The water bath is heated slowly and the temperature is slow, and the heating temperature is not more than 100 ℃. It is a "gentle" heating method; dry heating method is fast and fast. The heating temperature can be as high as about 180 ℃, which can be regarded as a kind of "Quick fire" heating, two heating methods are suitable for different material samples.
4. Some organic substances should not be exposed to open flames, so the heating process must use a water bath method; while some organic metal reagents are not easy to contact moisture, so the water bath heating method cannot be used (because the water bath heating will generate a large amount of water vapor).
Shanghai Haozhuang has not only developed low-temperature and constant-temperature instruments, ultrasonic instruments, cabinet instruments, microbiological instruments, ice-making refrigeration instruments, and laboratory supporting instruments, but also gradually formed a product pattern in which various scientific instruments and technical reserve products develop together. . Customer first, serving customers. Shanghai Haozhuang Instrument Co., Ltd. is a professional laboratory instrument equipment, biochemical instrument equipment, ultrasonic instrument equipment, test box experiment environment instrument equipment manufacturer, research and development, production, sales Haozhuang (LNB) brand instrument-intelligent constant temperature and humidity culture Box, sterile homogenizer, low temperature and constant temperature, welcome to consult and buy! Shanghai Haozhuang Instrument has first-class scientific and technological talents, welcome to Shanghai Haozhuang!