Magnetic Stirrers

A magnetic stirrer is a compact benchtop instrument that spins a rotating magnetic field to drive a small PTFE-coated stir bar inside your container, mixing solutions evenly without any external blade or shaft touching the liquid. Also known as an electric stirrer or lab stirrer, it gives consistent, adjustable-speed agitation for dissolving reagents, blending solutions, and running routine mixing steps across schools, universities, clinical laboratories, and industrial facilities throughout South Africa.

SmartLabs stocks magnetic stirrers ranging from compact mini models suited to small beakers through to larger units built for bigger volumes and busier benches, all designed to pair with standard PTFE stir bars for reliable day to day use. Whether you need a digital magnetic stirrer with precise speed control for sensitive lab work or a straightforward stirrer for classroom demonstrations, this range covers the everyday mixing needs of any chemistry, biology, or general science workspace.

  • Mini Magnetic Stirrer

    Mini Magnetic Stirrer

    • Lab and Research
    Only 10 left
    Regular price R 2,000.00
    Sale price R 2,000.00 Regular price
Magnetic stirrer mixing a beaker of liquid with a visible vortex

What is a magnetic stirrer?

A magnetic stirrer is a compact benchtop device that spins a rotating magnetic field beneath a container, driving a small PTFE-coated stir bar inside the liquid to mix it smoothly without any moving parts touching the sample. Speed is adjustable, so you can run a gentle mix or a vigorous vortex depending on what the solution needs.

SmartLabs stocks compact digital magnetic stirrers suited to beakers and flasks from a few millilitres up to a litre or more. Because there is no external stirring rod or blade, magnetic stirring keeps a sample sealed, clean, and free from contamination, making it the standard choice for routine mixing and dissolving work.

Common uses of magnetic stirrers in the lab

A spinning stir bar handles routine mixing without any moving parts touching the sample.

  • Researcher dissolving powder into a beaker on a magnetic stirrer

    Dissolving reagents

    Steady spinning breaks up powders and crystals far faster and more evenly than shaking or hand stirring, without introducing air bubbles into the solution.

  • Row of flasks each mixing on their own magnetic stirrer

    Running several samples at once

    Their compact footprint makes it easy to line up several magnetic stirrers side by side, so a busy lab can mix multiple samples in parallel without extra staff.

  • Student using a magnetic stirrer in a school chemistry classroom

    Classroom chemistry demonstrations

    A visible vortex makes mixing easy to demonstrate and observe, helping students connect stirring speed with how quickly a solution becomes uniform.

  • Adjusting the speed dial on a magnetic stirrer

    Gentle mixing for delicate samples

    Adjustable speed control lets you dial down to a slow, gentle stir for samples that would foam, denature, or separate if agitated too hard.