Use a bench drill to make holes in the bracket. A screw rod is inserted into the hole. The motor can be removed from the CD player. Use a flat drill to drill a circular hole that can accommodate the motor. Make a square slot to hold the switch and small power socket. Install the magnet. Making of stirring rod: Teflon plastic is wrapped around the iron rod. A special flask is required.
The following are a few of the magnetic heating stirrers which have a good reputation and can be referenced when purchasing: Beijing Jiuzhou Shengxin Technology Co., Ltd., Shenzhen Boda Jingke Biotechnology Co., Ltd., Beijing Shentai Weiye Instrument Equipment Co., Ltd., Dalong Xingchuang Experimental Instrument (Beijing) Co., Ltd.
The shell is molded by special flame-retardant reinforced plastic, which is resistant to heat, acids and alkalis and organic solvents. || The stir bar is made of PTFE and high-quality magnetic steel, which can achieve the characteristics of high temperature resistance, wear resistance, chemical resistance, and strong magnetism.
The electromagnetic stirrers currently on the market include three types of digital display products: digital heating plate, digital stirrer, and heating stirrer.
Check whether the accessories are complete with the machine, and install the fixture in the correct order. Check that the governor is connected. || When adding the solution, place the stir bar in the beaker solution, and fix the temperature control probe on the rubber chuck. After inserting the heating head into the solution, the stir bar must not be affected. || The speed regulation is generally gradually adjusted from low speed to high speed, remember that high speed gear is not allowed to start directly.
The speed should be gradually adjusted from low speed to high speed gear; the heating function cannot be used when not stirring; the instrument should be clean and dry before use; if the stirrer beats or does not stir while stirring, check whether the beaker is stable and the position is correct; Medium speed operation can extend the life of the agitator.
Unheated agitators are cheaper and can be purchased for around one hundred yuan. The price of a non-controllable heating type stirrer is generally between 300 and 1,000 yuan. The temperature control type of magnetic stirring is more expensive, basically it is more than a few hundred yuan and more than two thousand yuan.
The current supply in the market are the following: Beijing Yibaichuan Technology Development Co., Ltd., Beijing Zhuochuan Electronic Technology Co., Ltd., Xiamen Xinrui Instrument Co., Ltd., Gongyi Kehua Instrument Equipment Co., Ltd., Jiangyan City Analytical Instrument Factory, Yueqing Run Generator Co., Ltd., Shenzhen Aoda Technology Co., Ltd., Dalong Xingchuang Experimental Instrument Co., Ltd.
If it is found that the stirrer is not beating synchronously, or the stirrer is not running, immediately cut off the power and check whether the bottom surface of the container is flat. During operation, the speed must be increased slowly, and it cannot be run at the highest speed as soon as it is started. For a stirrer that can be heated, the heating time should not be too long.
Compared with ordinary stirrers, digital constant temperature magnetic stirrers have the characteristics of high sensitivity, strong controllability, and wide temperature control range. It has been widely used in the experiments of higher organic chemical synthesis.
Adjust the speed control knob from slow to fast, and do not allow high-speed gears to start; for liquids that need to be heated, turn on the heating switch while stirring to adjust the temperature; for liquids that require temperature control, insert the temperature sensor plug into the rear panel socket of the instrument Insert the sensor probe into the solution and adjust the temperature of the temperature controller to enter the working state of automatic temperature control.
It is a laboratory instrument used for liquid mixing. It is mainly used for stirring or simultaneously heating and stirring low-viscosity liquids or solid-liquid mixtures. Its transmission method is a non-contact transmission, there is no mechanical friction and impact, and there is no electrical phenomenon during operation. In addition, with the use of explosion-proof motors, it can meet the user's reaction to flammable and explosive materials safely .
In recent years, during the use of magnetic stirrers, according to the comprehensive aspects of product performance, the following several well-known manufacturers have been selected: Baling, Komeda, Diaopu Optics, Dalong, IKA, etc.
The most common and most commonly used is the stirring non-heating type agitator. The other type is a stirring and heating type magnetic stirrer.
The reactants were mixed uniformly and the temperature was uniformed. Can prevent bumping. Speed up reaction and evaporation.
Magnetic stirring is used in liquid experiments to stir liquids or solid-liquid mixtures. Utilizing the principle of the same-sex repulsion and the opposite-sex attraction of the magnets carried by itself, the magnetic stirrer in the container can be driven to operate, so that the requirements for stirring the liquid can be achieved.
The heating power of most agitators is more than 100W, 200W, and 300W. Of course, there are also 500W and 1000W agitators. The 1000W market is basically rare, mainly. Generally, the higher the temperature that can be heated, the greater its heating power will be.
Turn on the power, then select the temperature required for the experiment and set it to a constant temperature state. Adjust the temperature switch to the setting state, and then adjust the temperature control switch to the temperature required for the experiment. The number on the display is the temperature of the magnetic stirrer tank. .
The main application areas of the cell stirrer include: serum-free acclimatization of cell culture medium, expansion culture of suspension or adherent cells, acclimatization culture of trans-suspension of adherent cells, multiparameter analysis of cell parallel experiments, pilot scale Experiments such as the preliminary process exploration, dynamic cell culture and domestication, and process exploration and optimization of adherent conditions.
If the stirrer beats or does not stir while stirring, cut off the power and check whether the beaker is placed in the correct position, and check whether the current voltage is normal. The heated stirrer needs to pay close attention to the heating time should not be too long. It can run for 8 hours at medium speed and 4 hours at high speed.
The motor in the magnetic stirring box rotates with the coaxial magnetic steel, and the stirring effect in the container is caused by the magnetic field effect, so that the solution or colloid can be stirred. The magnetic stirrer uses a characteristic of the same repulsion of magnetic materials as a whole, and then constantly changes the polarity of the two ends of the base to push the magnetic stirrer to rotate.
Miniature appearance, simple and convenient operation. Carbonless motor, durable. Stepless speed regulation, wide speed range. Strong magnetic, anti-jumper. It is easy to carry and meets various experimental needs.
The principle of the magnetic stirrer is to use the same-sex repulsion characteristic of magnetic objects. In the experiment, the rotation of the stirrer is promoted by continuously changing the polarity of the base. the mix of.
Start at low speed and gradually shift to high speed gear. When it is not stirred, it cannot be heated, and the power must be turned off when it is not working. If high-speed operation is not required, it is best to use medium or low-speed operation to avoid damage to the instrument.
The new ultra-thin magnetic stirrer is a new product updated on the basis of the original stirrer. It has a higher sensitivity and makes liquid stirring a step closer to automation. The ultra-thin magnetic stirrer uses the principle of magnetic field vortex, and maintenance is easier than ordinary stirrers.
The biggest difference between the magnetic stirring method and the shaking stirring method is that the former is a regular movement and the latter is an irregular movement, so the shaking stirring method is more complete, and the mixing effect is more efficient and ideal.
The development of laboratory instruments such as magnetic stirrers in our country has been gradually improved, especially the magnetic stirrers of some old brands are constantly being improved. Among the more famous ones are: "Zuole" brand magnetic stirrer, Tianjin Jinli Instrument Equipment Technology Development Co., Ltd., and Haibin Instrument.
First check whether the accessories are complete and install the fixtures in the correct order. After adding the solution, place the stir bar in the solution in the beaker, fix the temperature-controlling probe on the rubber chuck, and insert the heated end into the solution. Plug in the power plug of the instrument, and then turn on the power switch to turn on the power.
The magnetic stirrer can adjust different speeds according to different tests. It is a special stirrer specially designed for low-speed liquid mixing experiments. With programming setting program, data of each experiment can be recorded. Unit models and 4-digit models are available.
Ordinary magnetic stirrer: the most expensive basically does not exceed two hundred yuan. Heating magnetic stirrer: most of 100 yuan to 300 yuan. Heating constant temperature magnetic stirrer: the price is generally between 400 and 600 yuan. Digital display thermostatic magnetic stirrer: most of the price is between 600 and 1,000 yuan.