Magnetic mixers are used to mix different chemical compounds for various reasons. These include the creation of basic color pigments and metals such as steel and aluminum. Magnetism is harnessed on these devices through electromagnetic induction. This process generates a magnetic field that induces current flow in electrical conductors that move within the field. For a mixing device to be effective, it needs to have certain properties to work properly. Several key qualities should be considered when searching for a magnetic mixer:
1. Speed
A good mixer should reach operating speeds as quickly as possible. This allows for faster dispersion of the materials and increased production rates, saving laboratory time. The quickest mixers can hit maximum speeds in less than a second, making them ideal for processing large batches during continuous manufacturing operations or when using high-intensity magnets.
2. Magnetic Strength
It is important to use magnetic stirrers to remove heat quickly and maintain an even temperature for continuous manufacturing operations. Rapid heat removal combined with high magnetic strength ensures thorough mixing without any hot spots or rest periods in which material could cool down. Any lumps in the mixture lead to poor dispersion, which affects the final product’s properties. If a mixer cannot pull heat from the mixture, it must be shut down and allowed to cool before restarting the process. This is time-consuming and reduces production rates, costing companies thousands of dollars per day.
3. Motor Power
A good magnetic mixer requires a powerful motor to mix materials quickly and evenly. A strong motor can achieve high speeds quickly and maintain them for the duration of the batch, which results in faster processing overall. It also produces more efficiency, allowing for longer periods between maintenance checks. It generates minimal heat and minimizes noise production even when running continuously to ensure a comfortable work environment.
4. Durability
To ensure that a mixer can handle continuous operation, it must have durable housing and brushes. The housing should be made from non-conductive material to prevent short-circuiting if the mixer is accidentally dropped into water or other liquids. A protective grille across the top of the motor prevents damage and injury if an object falls onto the mixer, and non-skid feet keep the mixer stable while it runs. The brushes must be made of a long-lasting material to minimize downtime and repairs.
A good magnetic mixer should have a powerful motor for rapid processing, be capable of maintaining even temperatures, and have a long lifespan. These qualities allow for faster dispersion and better product consistency in laboratory settings where high-intensity magnets are often used.
