Hanna Instruments Compact Magnetic Mini-Stirrers – HI180

The test sample should ideally be mixed before electrochemistry measurements are conducted. A magnetic stirrer is used to ensure correct mixing and uniform temperature and consistency of the sample. A sensor’s response time can be sped up by swirling the sample to provide a steady reading.

Compact, colourful, and economical
Magnetic mini-stirrers in the HI180 series are lightweight and portable, making them simple to use in a lab setting. With these vibrant, space-saving stirrers, a lack of space on laboratory benchtops is no longer an issue. The laboratory bench can accommodate multiple HI180 mini-stirrers simultaneously, and the 10 selectable colours can aid in the user’s ability to distinguish between various samples. Users at a distance are further assured that the stirrer is in use by power-indicating LED lights. Chemicals that are spilled accidentally won’t destroy the sturdy plastic coating. With electronic controls that make it simple for the user to precisely manage the speed, a HI180 magnetic stirrer is a cost-effective option for customers that do not require the additional expenditure of a heating element.

Speedsafe™
In the laboratory, a sample is frequently taken out of a stirrer before the speed has been sufficiently decreased. Normally, the internal motor would speed up until it was harmed. The SpeedsafeTM mechanism is built into the HI180 magnetic mini-stirrer to control speed in response to viscosity changes or the removal of a load. With SpeedsafeTM, the stirring speed is tracked by an Opto-sensor, which is connected to an FVC (frequency voltage converter). The voltage-controlled oscillator (VCO) is turned off by the speed limiter when the speed reaches a certain maximum level, which reduces the motor speed. This prevents the motor from rapidly accelerating to a high speed that would be dangerous to both the operator and the stirrer when the load is quickly withdrawn from the stirrer, a characteristic not frequently present in conventional stirrers.