Shanghai Haozhuang Instrument specializes in research and development and production of laboratory instruments. The technology of nitrogen blowing instrument is very perfect. The following briefly introduces the working principle of nitrogen blowing instrument. By blowing nitrogen into the sample, the surrounding air flow and the temperature increase can be used The solvent evaporates quickly. Nitrogen is an inert gas that can isolate air and prevent oxidation. The nitrogen blower uses the rapid flow of nitrogen to break the gas-liquid balance above the liquid, thereby accelerating the rate of liquid evaporation; and raising the temperature by dry heating or water bath heating (the boiling point of the target is generally higher than that of the solvent), thus To achieve the purpose of anaerobic concentration of the sample, to keep the sample more pure.
Using a nitrogen blower to replace the commonly used rotary evaporator for concentration can concentrate dozens of samples at the same time, greatly shortening the sample preparation time, and has the characteristics of time saving, easy operation and fast.
Two; product features:
1. The heater enables the sample to be quickly and efficiently heated to the desired evaporation temperature, and at the same time, the gas is blown from the gas path to the solution surface through the gas needle to promote rapid solution evaporation and sample concentration.
2. Each blowing needle can be controlled independently, can be purged separately, and the gas flow can be adjusted independently, without wasting gas.
3. The position of each blow pin can be changed independently to make it suitable for different sample containers and different sample positions.
4. This product has the characteristics of electric lifting: the liquid level of the concentrated sample can be observed at any time when the sample is concentrated.
5. All parts of this product are made of stainless steel or Teflon coating, which has the function of acid and alkali resistance.
6. When concentrating toxic solvents, the entire system can be placed in a fume hood.
7. Rotating the sample holder: contacting the sample in the front, it is convenient to operate, and it is more conducive to observing the concentration of the sample, avoiding close observation of the sample harmful substances to harm the body.
The speed of solvent evaporation depends on the temperature of the solvent itself, the surface area of ​​the solvent, and the gas flow rate on the solvent surface. Increasing the temperature, increasing the surface area, and increasing the gas flow rate on the solvent surface can promote evaporation. Nitrogen blower uses nitrogen gas (which will not oxidize the target and block oxygen), and sweep the surface of the solvent. By increasing the temperature, increasing the surface area of ​​the solvent, and increasing the flow rate of nitrogen, the solvent can be evaporated to achieve rapid Concentrated effect.
For more high-quality products, please consult Shanghai Haozhuang Instrument for details!
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