Mini magnetic stirrer 1 L

Quick Answer: Mini magnetic stirrer 1 L is a compact magnetic stirrer that handles up to a litre of liquid while taking up little bench space. The mini magnetic stirrer 1 L is useful wherever a suspension must stay evenly mixed while samples are drawn from it.

Keeping a Suspension Uniform While Sampling

Cells, beads and fine particles begin to settle as soon as a liquid stops moving. If a student pipettes samples from a still yeast suspension for a haemocytometer count, the first sample comes from a thinner top layer and the last from a denser bottom layer, and the counts disagree for no biological reason. Standing the suspension on a mini stirrer at a slow speed keeps every sample representative.

The same applies when making sodium alginate beads with immobilised enzyme or algae. The alginate mixture has to be uniform as it is dripped into calcium chloride, and the calcium chloride itself benefits from gentle stirring so the beads do not stick together as they form. A compact stirrer fits neatly beside the syringe used for dripping.

The title lists no heater, and this page treats the stirrer as room-temperature only. Its small size makes it easy to carry to a demonstration bench or another room with a mains socket.

Useful Jobs for a Mini Stirrer

• Keeping yeast, algae or bacterial suspensions uniform while samples are taken for counting
• Stirring calcium chloride solution as alginate beads are dripped in
• Holding a colloid or fine precipitate in suspension during a light-scattering or turbidity demonstration
• Keeping a solution mixed beside a colorimeter while samples are taken for each reading

Specifications

Using the Mini Stirrer Well

• Use a slow speed for living cells; the aim is to stop settling, not to create a vortex.
• After work with microorganisms, unplug the stirrer and disinfect its outer surfaces following your lab’s usual procedure.
• Keep the stirrer back from the edge of the bench, since a small, light unit is easily knocked off.

Why Choose LabEquip

Compact stirrers like this are popular with biology teachers and technicians who need stirring at several places around the lab without giving up bench space. LabEquip lists it in General Lab Products along with the smaller mini stirrer 0.5 L; send quantities through the contact page.

Frequently Asked Questions

Why do my cell counts vary between samples?

Cells settle quickly, so samples taken from a still suspension differ from top to bottom. Keep the suspension stirring slowly and take each sample from the same depth.

Will stirring damage living cells?

Gentle stirring does little harm to yeast or algae, but a fast bar grinds cells against the vessel base. Use the lowest speed that stops settling.

What is the difference between the 1 L and 0.5 L mini stirrers?

Both are small units; the 1 L model takes larger volumes and vessels, while the 0.5 L model is aimed at vials and small beakers. Choose by the largest volume you stir routinely.

Does this compact stirrer heat?

No heater is listed in the title. It stirs at room temperature; for warm solutions choose one of the heating magnetic stirrers in the range.

Can the stirrer be used with a colorimeter?

Yes. Keep the stock solution stirring beside the colorimeter and pipette each sample from it just before reading, so every cuvette gets the same well-mixed solution.

How do I clean the stirrer after microbiology work?

Unplug it, wipe the outer surfaces with a suitable disinfectant on a cloth and let it dry. Never spray or soak the housing, because liquid can reach the motor.

Last Updated: September 2026