What Does a Magnetic Stirrer Do? This article explains what a magnetic stirrer does and why it is widely used in laboratory mixing. It covers its main functions, including reagent preparation, solid dissolution, solution homogenization, heat distribution, and analytical sample preparation. It also explains which liquids are suitable for magnetic stirring, the benefits of contact-free mixing, and the differences between basic, hotplate, digital, and multi-position models. Readers can also learn when a magnetic stirrer is more suitable than manual or overhead stirring and which factors should be considered before selecting laboratory mixing equipment.