Hot plate stirrer: Why is it essential in a biology lab?

Hotplate stirrers are benchtop electronic equipment that adapt to multiple processes that require temperature and stirring. That is, they are instruments that provide simultaneous heating and stirring options. This equipment is frequently used in biology laboratories, since it is used to mix liquids with each other or with powders, to produce solutions and different suspensions, due to its versatile design that allows stirring and heating at the same time. Reducing the time of use and reducing risks of contamination.

Hot plate stirrers are commonly used in chemical process, physical chemical analysis, pharmaceutical analysis and other fields. Among its most frequent uses we can mention

  • Chemical analysis drying.
  • Organic synthesis and extraction of compounds.
  • Dialysis and preparation of buffer solutions.
  • Thermal treatment, evaporation of liquids.
  • Studies related to biochemistry and other compounds.
  • Heat flasks and other glassware.

Composition of a stirrer with heating plate

Regarding its characteristics, we can say that it is a device that has electrical heating elements resistant to corrosion and chemical and mechanical attacks. It is very useful for heating containers with liquids, glass materials, or the content inside them, in a uniform and controlled way.

Most hot plate stirrers feature a magnetic stirrer that allows the heated liquid to stir automatically, this occurs when a small magnet or stir bar is inserted into it, and are preferably used to create dilutions or solutions. Normally, this type of agitator has a flat surface on which the containers containing the fluids to be heated or agitated, or both, are placed. This surface is generally made of materials that are good thermal conductors such as aluminum [Al] or ceramic materials.

An agitator with a heating plate has a heating element (an electrical resistance), a control system (on, off, temperature control, agitation control and its respective motor). The motors used in this type of instrument are generally single-phase induction motors, known as degraded pole motors. Its speed depends on the number of poles and the frequency of the supply voltage.

Gear-driven motorized agitators are preferred because they are quieter, more efficient, and have no external moving parts to break or wear out (other than the simple bar magnet). Due to its small size, the stir bar is easier to clean and sterilize than other stirring devices. These equipments do not require lubricants that can contaminate the reaction vessel and the product. They can be used inside hermetically sealed vessels or systems, without the need for complicated rotary seals.

What do we offer you at Kalstein?

At Kalstein we are a manufacturer of high-class laboratory equipment and we offer you an excellent range of hot plate stirrers at the best prices on the market. In this opportunity we present our magnetic stirrer with heating plate YR02940, this equipment has a design and characteristics that make it your ideal stirrer for your laboratory, among them we can mention: HERE

  • It is a compact and simple equipment to operate.
  • Digital display of temperature and speed, heating temperature: Rt-380 degrees and mixing speed: 100-1800 RPM.
  • Heat and corrosion resistant aluminum alloy housing for durability.
  • Ceramic coated aluminum heating plate for excellent heat distribution and corrosion resistance.
  • Specially designed casing prevents spills from damaging the electronics inside.
  • Secondary thermal insulation board prevents heat loss and eliminates heat damage to electronic components.
  • Adjustable temperature and rotation speed.

For more information, we invite you to visit our product catalog, in its products section available at: HERE