Heating magnetic stirrer 1 L

Quick Answer: Heating magnetic stirrer 1 L is a small hotplate stirrer that warms and stirs up to one litre of liquid. It is well matched to student practicals in which a beaker or flask has to be held at a chosen temperature for several minutes.

Small-Scale Temperature Practicals

Many school investigations turn on temperature: how fast amylase digests starch at 20, 30 and 40 °C, how the reaction between sodium thiosulfate and acid speeds up as it warms, or how much potassium nitrate dissolves at each temperature. Each needs a small volume held steady for several minutes, which a Bunsen flame under a tripod does poorly. The heating magnetic stirrer 1 L warms the vessel gently while its stir bar keeps the temperature the same throughout.

A convenient set-up is a stirred water bath: a 600 mL beaker of water on the plate, with a stir bar, a thermometer and test tubes of reactants standing in it. Stirring removes the warm and cool layers that form in still water, so every tube sees the same temperature. Adjust the heat in small steps, since a small volume responds quickly and overshoots easily.

The 1 L rating sets the upper volume, so this stirrer suits student benches and small preparations rather than bulk work. The plate material and maximum temperature are not given in the title; for most temperature practicals the working range stays below 70 °C.

Specifications

Care and Safe Use

• Raise the heat setting in small steps and wait for the thermometer to settle before adjusting again.
• Hold the thermometer in a clamp so it cannot be struck by the stir bar or rest on the hot base.
• Keep paper, plastic bottles and the mains lead away from the heated top.
• At the end of a practical, switch the heater off before the stirring, and warn students that the plate stays hot.

Practicals at Controlled Temperature

• Enzyme activity at different temperatures, using a stirred beaker of water as the bath
• Effect of temperature on the rate of the sodium thiosulfate and hydrochloric acid reaction
• Solubility of a salt at several temperatures to plot a solubility curve
• Warming indicator or buffer solutions to the temperature a method asks for

Why Choose LabEquip

A small heated stirrer is often bought for each practical group, or for the teacher’s bench in biology and chemistry rooms. LabEquip supplies it in General Lab Products; a digital thermometer is a useful partner for reading the liquid, and orders can be arranged via the contact page.

Frequently Asked Questions

How do I keep a water bath at 40 °C on this stirrer?

Heat a beaker of water with a stir bar and a thermometer in it, then lower the setting as the reading approaches 40 °C. Small adjustments, made once the reading has settled, hold the bath within a degree or two.

Why use a stirrer rather than a Bunsen burner for these practicals?

A flame heats unevenly and is hard to hold at one temperature, while the plate gives steady, adjustable heat and the stir bar mixes the liquid. There is also no open flame near flammable materials.

Can test tubes be heated directly on the plate?

No. Stand them in a stirred beaker of water on the plate. The water bath gives each tube the same temperature and stops the contents boiling at the bottom.

Will the stir bar hit the test tubes in the bath?

It can if the tubes reach the base. Hold them above the bar with a test-tube rack or clamp, or use a short bar at low speed.

Is 1 L large enough for a class?

It suits one practical group or a demonstration. For class stock solutions, a larger heating stirrer or one with several positions is more efficient.

How accurate is the heat setting?

The dial sets the plate, not the liquid, so read the temperature with a thermometer in the water. The plate is always hotter than the liquid while it is heating.

Last Updated: September 2026