Among many laboratory operations, mixing is a necessary operation too. The market comes with several varieties and specifications of magnetic stirrers. Therefore, it is critical to select the most appropriate one for your work, qualitative or quantitative. Magnetic stirrers utilize magnetic bars, which work the best when paired with standard glass containers for usage in different chemical processes. Additionally, a Laboratory hot plate that does the work of stirring as well as heating samples at the same time could also be found in this stirrer.
Choosing the most appropriate magnetic stirrer according to your application ensures that your solutions are stirred optimally. Invest some effort as well as time in determining which model is appropriate for your lab activity, given the quantity of models of magnetic stirrers available.
Different kinds of magnetic stirrers:
By being familiar with the various accessible options, you can make the unit selection process faster and easier.
- Multi-Places magnetic stirrers:
Many beakers or flasks can be simultaneously heated and stirred by this type of stirrer. The conditions of reaction may be adjusted to be constant across all samples individually due to the features of this stirrer. 
- Laboratory Digital Hotplates/ Laboratory magnetic Stirrers:
These stirrers include LCD or LED panels that indicate temperature, rotation speed, etc. These digital units include an electronic speed controller that maintains a steady pace. They allow simple adjustment till desired target value is attained. 
- Analog magnetic Stirrers:
The majority of analog magnetic stirrers have electronic speed control to maintain consistent speed regardless of the sample load. These stirrers have poor heat temperature stability.
Some key tips
- Type of work in the experiment:
For operations requiring constant monitoring of the pH of buffered systems, consider pH probes magnetic hotplate stirrers. Additionally, devices having pre-programmable or remote-control capabilities are available for inconvenient work timings.
- Temperature:
The hotplate's heat output, the min and max heating and adjustable temperatures are all factors to consider when purchasing a laboratory hotplate with a magnetic stirrer. Prior to purchasing a magnetic stirrer conduct an audit of your laboratory's daily operations and requirements. You can purchase a magnetic stirrer along with a separate hot plate if you do not have many usages related to heating and stirring.
laboratory hotplate with a magnetic stirrer may be preferable if you need to often heat and stir samples. Keep track of the amount of power required to accomplish your desired temperature and the degree of hotness of the samples. 350C to 500C of temperature can be attained by Laboratory hot plates made of metal or ceramic. Choose hotplate stirrers that accept heating blocks for uniform heating. For consistent stirring and increased longevity, a brushless stirrer motor can be used.
- RPM:
It is important to heat your fluids at a steady rotation rate per minute. Magnetic hotplate stirrer devices operate at a minimum speed of roughly 1000rpm, whereas stronger units operate at speeds up to 2000rpm. For the majority of laboratories, units with an RPM of 1000-15000 should be enough.
- The volume of solution and viscosity of solution:
Magnetic stirrers are advised when working with modest experiments and sample sizes. In general, compact magnetic stirrers are capable of holding 3 liters with surfactant solutions up to 1 liter and an emulsion of 250ml. So, ensure that the device you are purchasing has a maximum capacity.
What is Laboratory Hotplate & Stirrers
hotplate with a magnetic stirrer keeps liquids circulating as they are heated for a faster, more even reaction.
Overhead stirrers can be used when working with thick suspensions, huge sample quantities, etc., because mechanical stirring is required.