How the nitrogen blowing device works

There are many gas consumption factors for nitrogen blowing instruments , such as nitrogen flow rate, whether there is a water bath, the boiling point of the solvent, and the like. In the past, we used a 12-stage nitrogen blower with a water bath function. The solvent was n-hexane, 25 mL of solvent, and a bottle of nitrogen (usually using high-purity nitrogen, if the requirements were not strict, it could be used for a long time). I don't know how many blow holes the landlord's nitrogen blower has. If it is not used at the same time, be careful not to blow it. If you blow some high boiling solvent, such as ethyl acetate, it will consume more. There are two ways to speed up evaporation in Dongao Accounting: to strengthen the air flow around it and its temperature. Nitrogen is also an inert gas that also acts as a barrier to oxygen and prevents oxidation. The nitrogen blowing instrument achieves the purpose of concentration through these principles. It blows nitrogen rapidly, continuously, and controllably onto the heated sample surface to achieve rapid concentration of large amounts of sample.
200mL to 1mL? If you use a nitrogen blower, the efficiency is too low. See you, first use a rotary steam to evaporate a large part, then transfer it to a nitrogen blower to dry it.

Nitrogen blowing instruments are also called nitrogen blow dryers, automatic fast concentrators, etc. Nitrogen blowers have been accepted and accepted by more and more people instead of traditional rotary evaporators. The advantages are as follows: 1. Multiple samples can be processed at one time, and the advantages are more obvious in multi-factor and multi-level repeated experiments. 2. The experimental operation is simple and flexible. It is possible to register the accounting at any time without restriction to adjust the process of enrichment. 3. The operator does not need long-term maintenance in the experiment, saving manpower. 4. The rotary evaporator may cause loss of sample when the solvent is boiled, and the nitrogen blower is accurate and sensitive when concentrated to avoid sample loss.

Upon arrival, the contents of the package should be carefully checked to see if the contents of the box match the packing list and the shipping process is damaged. Keep the box and packing materials until all parts and instrument installation tests have been completed. If damage is found or does not match the order, please contact Beijing Kanglin Technology Co., Ltd. immediately.
The Nitrogen Blowing Classroom is designed for analytical or environmental laboratory evaporation enrichment applications and is suitable for use by highly trained laboratory personnel. It is recommended that the nitrogen blower not be used for other purposes, and it is used for its own purposes. The nitrogen blower should not be modified or modified. Beijing Kanglin Technology Co., Ltd. is not responsible for any losses caused by improper operation or any improvement or modification. Once the operation is mistaken or improved, all underwriting is immediately lifted.
The nitrogen blower should be used according to the operating instructions in this manual. The following are general safety knowledge that should be known when using a nitrogen blower.


The nitrogen blower is used to concentrate a large number of samples by rapidly, controlled, and continuously blowing nitrogen onto the surface of the heated liquid sample to achieve rapid concentration of the sample. The structure of the instrument is shown in Figure 1.
After the nitrogen blowing instrument is installed, the chassis is supported in a constant temperature water bath, the water bath power is turned on, the water bath temperature is set, and the water bath starts to heat. The nitrogen blowing instrument is lifted, and the samples that need to be evaporated and concentrated are respectively placed on the sample positioning frame and are lifted by the tray, wherein the height of the tray and the positioning frame can be adjusted according to the size of the training sample tube. Open the flow meter needle valve, and the nitrogen gas reaches the gas distribution plate through the flow meter and the gas supply pipe. After the gas is distributed, it is sent to the needle valve tube (mounted on the gas distribution plate) above each sample position. Then, the needle valve needle valve is adjusted through the net school, and the nitrogen gas is blown to the liquid sample test tube through the needle valve tube and the needle. The needle valve tube can be slid up and down by adjusting the lock nut, the needle height is adjusted, and the sample surface is blown with ripples, and the sample is again Do not splash as well. After zui, put the nitrogen blowing device in the water bath until the evaporation is concentrated.

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