Shanghai Haozhuang Instrument Co., Ltd. develops the LNB brand nitrogen blower, which is energy-saving and environmentally friendly, leading the country. Professional manufacturing is more secure and affordable. The principle of nitrogen blower: There are two ways to accelerate evaporation: strengthen the air flow around it and its temperature. Nitrogen is also an inert gas and can also isolate oxygen to prevent oxidation. The nitrogen blower achieves the purpose of concentration through these principles. It will blow nitrogen gas quickly, continuously and controllably to the heated sample surface to achieve rapid concentration of a large number of samples. The technical advantages of the nitrogen blower: 1. It can process multiple samples at a time, and the advantages are more obvious in multi-factor and multi-level repeated experiments. 2. The experiment operation is simple and flexible. Registered accountants can regulate the process of enrichment at any time without restriction. 3. The operator does not need long-term maintenance during the experiment, saving manpower. 4. The rotary evaporator may cause sample loss when the solvent is boiling, while the nitrogen blower is accurate and sensitive during concentration to avoid sample loss. Use of nitrogen blower: After the nitrogen blower 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 begins to heat up. Raise the nitrogen blower, place the samples that need to be evaporated and concentrate on the sample positioning frame, and hold it by the tray. The height of the tray and the positioning frame can be adjusted according to the size of the training sample test tube. Open the needle valve of the flowmeter. Nitrogen reaches the gas distribution plate through the flowmeter and the gas pipe. After the gas is distributed, it is sent to the needle valve tube (installed on the gas distribution plate) above each sample position. Then, adjust the needle valve needle valve through the network calibration. 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 to adjust the height of the needle. It is better not to splash. Finally, place the nitrogen blower in the water bath until the evaporation and concentration is complete. Application of nitrogen blower: Pesticide analysis: such as vegetables, fruits, grains, plant tissues Environmental analysis: such as drinking water, groundwater and polluted water samples Biological analysis: such as serum, plasma, blood, urine Commodity inspection: such as inspection of Croft, etc. Food and beverage: such as milk, wine, beer, etc. Pharmaceutical drug testing: such as traditional Chinese medicine Precautions for nitrogen blower: (1) Do not use nitrogen blower for substances with a flash point below 100 ° C. (2) When using a nitrogen blower, hands and eyes should be protected. (3) The nitrogen blower should be used in a fume hood to ensure good ventilation. (4) Do not move the nitrogen blower during heating to prevent burns. (5) Use a three-wire grounded power supply. (6) Do not open the shell of the water bath with power on to prevent electric shock. (7) The maintenance of the nitrogen blower should be performed by professionals. Improper replacement of components may cause damage to the nitrogen blower or cause safety hazards. (8) Do not use nitrogen blower for highly flammable substances like petroleum ether. (9) Do not use acidic or alkaline substances, otherwise the nitrogen blower will be damaged. Shanghai Haozhuang Instrument Co., Ltd. is a technologically innovative high-tech enterprise based in Shanghai and radiating the whole country. The company has first-class technical personnel and a good team of technicians, with advanced technology and strong development strength. Since the establishment of the company, the products and The service is recognized by customers and has a good reputation. The company adheres to the business philosophy of "integrity. Professionalism. Innovation. Growth" to provide customers with elaborate services. 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