HANNA Instruments Laboratory Division has released the HI190 magnetic mini stirrers. It is compact and lightweight and designed to stir up to 1L of water.
It has an electronic control that allows the user to precisely regulate its speed. The internal Speedsafe mechanism ensures that the maximum speed of the stirrer is never exceeded, even if a sample is removed from the stirrer before reducing the speed.
It has a minimum stirring speed of 100 rpm and maximum speed of 1000 rpm. The unit is housed in a tough ABS body, which will resist damage from most accidental spills in the lab.