Nitrogen blowing instrument is divided into dry bath nitrogen blowing instrument and water bath nitrogen blowing instrument according to different heating methods. When using gas chromatography, liquid chromatography, and mass spectrometry to analyze samples, dry nitrogen blowers and water bath nitrogen blowers are often used for crystal purification of samples. Because of its time-saving, convenient operation and easy control, it is widely used in pesticide residue analysis, environment, biological products, food, pharmaceutical and other industries.
The biggest difference between dry bath nitrogen blowing instrument and water bath nitrogen blowing instrument is that the heating method used by the two is different, so the performance of the applicable sample is not the same.
The heating method of dry nitrogen blowing instrument adopts aluminum block with strong thermal conductivity for heating, dry heating, rapid and uniform heating, and low pollution; The number of sample numbers is large, and the number of wells can be selected according to needs: such as 12 wells, 24 wells, etc.; The heater rapidly heats the sample to the evaporation temperature, while the gas is blown to the surface of the solution through a gas needle, promoting rapid evaporation of the solution and sample concentration.
The structure of the water bath nitrogen blowing instrument is composed of base and bracket equipment, sample holder and gas distribution system, the test tube is fixed by the test tube clamp and support plate with spring, the gas reaches the gas distribution system through the flow meter, and the flexible guide tube introduces the gas into the valve and stainless steel needle in each position, blowing the sample to the sample surface, so that the solution evaporates rapidly. Suitable for test tubes, Erlenmeyer flasks, centrifuge tubes, beakers and other containers, strong versatility; Water bath heating, intelligent constant temperature control. Heating, lifting, air supply, drainage, timing can be independently controlled, free operation.
