Introduction of Magnetic Stirrer with Heating
Magnetic Stirrer is a laboratory equipment, by a stir bar (also called "flea”) rapidly spinning in a glass container, the liquid or semi-liquid can be equably mixed well. Stir bar is an elongated permanent magnet, which is usually coated by PEFT (Polytetrafluoroethene, also known as Teflon). On a magnetic stirrer with heating function, the material can accept the highest temperature, up to 270°C.
The spinning of the stir bar is brought by the spinning magnetic field. Magnetic coils are arranged in a definite pattern and AC current is passed through them. In the regular stirrers, it’s usually a plate of mu-metal arranged in the center axis, which can concentrate the longitudinal magnet flow lines of the coils interacting with which the rotor rotation and enhance the magnetism.
A Magnetic Stirrer is a common laboratory equipment with simple structure. It is usually used in the chemical and biological experiments.The frequency of usage is more than the traditional mechanical stirrer, because of its quieter and more efficient characteristic. When there is no exposed mechanical transmission components, it won’t been damaged easily. In addition, the chemical reactions are occurred majorly in the glass vessel. And the glass material will not shield the magnetic field, so the stir can work perfectly in the glass vessel. Compared to other stir equipment, the stir bar can be cleaned and sterilized easily. Besides, a magnetic stirrer does not need lubricating oil, so that in the mixing process does not contaminate the reaction solution, is some cases, a magnetic stirrer even can be used in a completely sealed vessel.
However, due to the size of the stir bar (stir bar has various types and sizes) and the limitation of the magnetic force, a magnetic stirrer is suitable for relative smaller experimental (solution volume under 5 liters). In the case of the solution with larger volume or viscosity liquid, the traditional mechanical stirrer is needed, when the magnetic stirrer has poor performance.
ACTTR Stirrer Series products, a magnetic stirrer with heating, brought to you by ACTTR Technology, is a reliable equipment with step-less adjustable spinning speed. It has not only a stable stir efficiency, but also has reliable digital temperature adjustment function. In addition, via the digital temperature control, as well as an external Pt100 temperature sensor, one can obtain a more accurate temperature performance. SH-4C Is an economical, practical, accurate and durable magnetic stirrer. It is a high-quality equipment that every laboratory should set up one.