Introduction of the characteristics and application of several water bath heaters in the laboratory
Features of water bath heating: mild conditions, slow temperature rise and fall, stable state. Therefore, many instruments use water as a medium. Such as water bath heater, wet nitrogen blower, water bath oscillator, rotary evaporator and so on. The following sub-items are resolved:
First, the water bath heater:
Water bath heaters are commonly known as water baths. Water baths are mainly used for distillation, drying, concentration, and temperature-sensitive chemicals or biological products in the laboratory. They can also be used for constant temperature heating and other temperature tests. They are biological, genetic, viral, aquatic, and environmentally friendly. , medicine, health, laboratory, analysis room, necessary tools for education and research.
Features: Large volume, can heat beakers, flasks, test tubes, etc. of different specifications.
Second, nitrogen blowing instrument:
The nitrogen blowing instrument is an experimental instrument that purifies the heated sample liquid with an inert gas to rapidly concentrate the sample to be processed, thereby achieving the effect of rapid separation and purification. The method is easy to operate, in particular, it can process multiple samples at the same time, which greatly shortens the detection time. It is widely used in batch testing of pesticide residues, pharmaceutical industry and general research.
Application field
(1) Analysis of pesticide residues: such as vegetables, fruits, grains, plant tissues
(2) Environmental analysis: such as drinking water, groundwater and polluted water samples
(3) Pharmaceutical drug testing: such as Chinese medicine pharmaceutical and drug testing
(4) Biological analysis: such as serum, plasma, blood, urine
(5) Drug testing: tests such as dioxins, melamines, Crotroxes, etc.
(6) Food and beverage: such as milk, wine, beer, liquid beverage
(7) Public security commodity inspection
Features: Generally used for heating samples in test tubes, micro tubes, and centrifuge tubes. The appearance is beautiful, the volume is small, the structure is reasonable, and the heating performance is stable. It is suitable for heating, cultivating and concentrating micro tubes of various specifications.
Third, the water bath oscillator
The water bath oscillator is mainly used for the vibration culture of various liquid and solid compounds such as biology, biochemistry, cells and bacteria in scientific research departments such as universities, medical, petrochemical, health and epidemic prevention, and environmental monitoring. It has the characteristics of reasonable structure, easy operation and high stability, which is the ideal equipment for the experimental staff.
Features: Simply put, water is used to thermostat the vessel, and the vessel is oscillated on the spring of the oscillator to achieve the function of constant temperature oscillation. It has the functions of cyclotron oscillation, reciprocating oscillation and dual function oscillation.
Fourth, rotary evaporator
Rotary evaporator is an evaporation instrument widely used in laboratories, suitable for reflow operation, rapid evaporation of large amounts of solvent, micro
The concentration of the components and the reaction process that requires agitation, and the like. The system can seal the pressure to 400~600 mmHg; the solvent in the distillation bottle is heated by a heating bath, the heating temperature is close to the boiling point of the solvent, and the rotation speed is 50-160 rpm, so that the solvent forms a film. Increase the evaporation area. In addition, under the action of a high-efficiency cooler, the hot vapor can be quickly liquefied to accelerate the evaporation rate.
Features: Mainly used for drying samples of evaporating bottles.
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