Magnetic stirrers are often used in chemistry and biology.
They are preferred over gear-driven motorized stirrers because they are quieter, more efficient, and have no moving external parts to break or wear out (other than the simple bar magnet itself).
Because of its small size, a stirring bar is more easily cleaned and sterilized than other stirring devices. They do not require lubricants which could contaminate the reaction vessel and the product. They can be used inside hermetically closed tools or systems, without the need for complicated rotary seals.
Magnetic stirrers may also include a hot plate or some other means for heating the liquid.
A device that can be found in almost every laboratory and is used to mix liquids and solutions in a simple way, without the need for a stir bar.
-In any laboratory in the life sciences, chemistry can be found magnetic stirrers that are used for mixing of solutions without the need for manual mixing of a laboratory worker.
-Magnetic stirrer suitable for mixing liquids in tools 4 cm to 40 cm in diameter.
In small tools such as test tubes or small vials with a diameter of 30-40 mm it will not be possible to stir.
In large tools with a diameter of over 50-60 cm it is not possible to perform an effective stirring that will stir all the liquid in the tool and not just in the center.
-The first consideration is, what is the volume of the solution you want to stir?
The larger the amount of liquid, the greater the need for a magnetic stirrer with a large motor and a larger work surface.
Magnetic stirrers with DC motors are designed for stirring small amounts usually up to a maximum of 1 liter or less, Changing viscosity during stirringWill cause their speed to slow down, impair the quality of the stirrer and may cause the engine to burn out.
For stirring of quantities greater than 1 liter, it is advisable to work with a magnetic stirrer with an AC motor
Recommended magnets length:For stirring 250 ml, a 25 mm long magnet is recommendedFor stirring 600 ml, a 40 mm long magnet is recommendedFor stirring 2 liters, a 60 mm long magnet is recommendedFor stirring 3-10 liters, a magnet with a length of 70 mm is recommendedFor stirring 10-30 liters, a magnet 80 m long is recommended
-The second consideration in choosing the magnetic stirrer is the diameter of the tool in which the liquid is located.
- The stirring speed is 100-1200rpm. In cases where slow stirring is required, a magnetic stirrer should be selected for a low speed range of 40-200rpm.
-In places where a large number of tools are mixed, multi-position stirrers of 4,6,10,16 positions are used
The tool with the liquid is placed on the magnetic stirrer, a magnet is thrown into the vessel a magnetic stirrer. Inside the stirrer, there is a motor with a magnet that rotates theThe magnet inside the vessel without any contact between them.The larger the motor and the larger the magnet length and diameter the larger the amount of liquid can be mixed,A magnetic stirrer is not suitable for mixing high-viscosity liquids but only for aqueous liquids.
-Useful for small volumes up to 8 liters, there are models with extremely powerful engines up to 30 liters
The manufacturer Fried Electric is the best in quality, performance and reliability and has survivability for many years.German AC motor with 3 years warranty for intensive work over days and consecutive weeks, for small and large volumes.
firstname.lastname@example.org, + 972-3-5595252ISRAEL: Hagavish 3 HolonUK: Cavendish House Parkway, Harlow Business Park, Harlow, CM19 5QF