Corning PC-420D Magnetic Heating StirrerWidely used in various universities, environmental protection, scientific research, health, epidemic prevention, petroleum, metallurgy, chemical, medical and other units. This instrument has good performance, no noise, no vibration, and can stir *, making it an ideal tool for laboratory technicians.
　　
　　Corning PC-420D Magnetic Heating StirrerInstructions for use
　　
1. Place the mixer steadily, turn the two knobs to the OFF position, connect the power cord, and plug in the power supply;
　　
2. Place the beaker containing the medicine in the center of the heating plate and insert a stirrer. The left knob is the speed control and power switch. Turn it to ON, and the speed display will light up. Slowly adjust it clockwise, and the number will display the stirring speed, so that the stirrer in the beaker reaches the desired speed;
　　
3. The knob on the right is the heating switch, which can set the temperature of the heating plate. When the medicine needs to be heated, turn it to the desired temperature position of the heating plate. The heating indicator light will turn on, and the heating plate will heat up and maintain the set temperature. The set temperature of the heating plate should be higher than the temperature required by the medicine. To rapidly increase the temperature of the medication, the heating plate temperature should be set higher. However, before the medication temperature is about to reach its desired level, the heating plate temperature should be lowered to slightly above the required temperature to prevent the medication from overheating; If during the heating process, the heating indicator light goes out and after a certain period of time, the temperature of the medicine has not yet reached the set temperature of the heating plate, the set temperature of the heating plate should be increased. Conversely, if the temperature of the medicine has reached the set temperature and the heating indicator light is still on, the set temperature of the heating plate should be lowered. If the temperature control accuracy cannot be achieved by following the above operation, an electric contact mercury thermometer can be used: connect the two leads of the thermometer to the two terminals at the back of the machine. Insert the thermometer into the medicine and fix it on *, set the desired temperature, and the temperature control accuracy can be improved.
　　
4. After using the mixer, turn the two knobs to the OFF position, unplug the power, clean the surface after cooling, and store it properly.
　　
Precautions
　　
1. When the stirrer jumps or does not stir during stirring, please cut off the power and check if the bottom of the beaker is flat and the position is correct. At the same time, please measure if the current voltage is between 220V ± 10V, otherwise the above situation will occur.
　　
2. Heating time should generally not be too long, intermittent use can prolong the service life.
　　
3. Medium speed operation can work continuously for 8 hours, while high-speed operation can work continuously for 4 hours.