Introduction: The water bath nitrogen blowing instrument adopts a combination of microcomputer control technology and PID control method to form a high-precision control instrument. The working principle is to blow nitrogen gas rapidly, continuously and controllably to the surface of the heated sample, according to the evaporation rate of the concentrated solvent and The boiling point, set heating temperature, and rapid oxygen-free concentration of a large number of samples. The water bath nitrogen blower includes a base and bracket device, a sample holder, and a gas distribution system. The tube is held in place by a spring-loaded tube holder and support plate. Each sample position is numbered; the gas passes through the flow meter to the gas distribution system, and a flexible guide tube directs the gas into the valve and stainless steel needle at each location, blowing the gas onto the sample surface, allowing the solvent to evaporate quickly. Depending on the size of the tube and the amount of solvent, each air tube can be independently raised and lowered to the appropriate height. Features: 1. It adopts water bath constant temperature, good heat transfer and uniformity, which is conducive to rapid heating and temperature control; 2. Number of samples: 12 positions, fixed position of spring test tube clamp, each sample position has digital code; 3. Strong compatibility, suitable for test tubes (10~29mm in diameter), conical flasks, centrifuge tubes, sample volume 1-50ml; 4. High temperature control precision, wide temperature control range, temperature digital display and easy calibration; 5. Round structure, 360 degree rotation freely, convenient for the sample holder to enter and exit the water bath, easy to use and operate. 6. Built-in liquid level sensor, anti-dry buzzer alarm; 7. Free-lifting needle valve tube, adjustable needle valve can control the gas flow rate of each sample gas needle; 8. All parts are corrosion resistant and resistant to organic solvents, durable and easy to clean. Application areas: Analysis of pesticide residues: such as vegetables, fruits, grains, plant tissues Environmental analysis: water, groundwater and polluted water samples Bioanalysis: sample preparation in hormonal analysis, liquid phase, gas phase, and mass spectrometry Food and beverage: such as milk, wine, beer, etc. Pharmaceutical drug testing: such as Chinese medicine pharmaceutical, drug screening Technical Parameters: Model: WD1000 Temperature control range: room temperature +5 ° C ~ 99 ° C Time setting: 1min~99h59min/∞ Display accuracy: ±0.1°C Temperature control accuracy: ≤±1°C Temperature uniformity (@60°C): ≤±1°C Heating time (40 ° C - 99 ° C): ≤ 30 minutes Number of samples: 12 Use test tube range: φ10~φ29 (liquid volume 1ml~50ml) Maximum lifting stroke: 200mm Maximum gas pressure: 200Kpa Maximum gas flow: 15L/min Outer diameter of gas joint: φ8 Heating power: 1000W Fuse: 250V 8A φ5×20 Dimensions: 390 × 300 × 850mm Weight: 10Kg
Introduction: The water bath nitrogen blowing instrument adopts a combination of microcomputer control technology and PID control method to form a high-precision control instrument. The working principle is to blow nitrogen gas rapidly, continuously and controllably to the surface of the heated sample, according to the evaporation rate of the concentrated solvent and The boiling point, set heating temperature, and rapid oxygen-free concentration of a large number of samples. The water bath nitrogen blower includes a base and bracket device, a sample holder, and a gas distribution system. The tube is held in place by a spring-loaded tube holder and support plate. Each sample position is numbered; the gas passes through the flow meter to the gas distribution system, and a flexible guide tube directs the gas into the valve and stainless steel needle at each location, blowing the gas onto the sample surface, allowing the solvent to evaporate quickly. Depending on the size of the tube and the amount of solvent, each air tube can be independently raised and lowered to the appropriate height.
