Common stirrers are manufactured with steel and aluminum components. These units are often too large and heavy to fit in the limited space of a laboratory. The HI190M, HI190MB and HI200M are compact and lightweight, so that lack of laboratory bench space is no longer a concern. These stirrers incorporate electronic controls that allow the user to regulate the speed with greater precision. 

Often, in the lab, a sample is removed from the stirrer before reducing the speed. This would cause the motor of conventional equipment to accelerate until it is destroyed. This is not the case with the HANNA® mini-stirrers. In fact, the internal Speedsafe mechanism will ensure that the maximum speed is never exceeded. HI190M and HI190MB come supplied with an ABS cover that will resist the harmful effects of chemicals that are accidentally spilled. The ABS covered mini-stirrer is

available in two versions: HI190M operating at 110 or 220 Vac and HI190MB at 12 Vdc. This provides you with the flexibility to choose between field and lab models, as well as being able to use the HI190MB for applications where a low input voltage is a must.