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Chementator Briefs – Sept. 2020

By Gerald Ondrey |

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Smart Stir Bar

Scientists at the University of Warwick (Coventry, U.K.; www.warwick.ac.uk) have developed a magnetic stir bar with an integrated process monitoring system. Described in a recent issue of ACS Sensors, the Smart Stirrer has an integrated microprocessor and a number of sensors encapsulated with a magnet in the shape of a conventional laboratory stir bar. In addition to mixing the solution, the Smart Stirrer wirelessly transmits, via Bluetooth, a number of properties to a computer. The concept is said to be valuable to R&D laboratories in the chemical process industries (CPI) because it allows wireless monitoring of several parameters of a chemical reaction simultaneously. Properties that can be monitored are color, transparency, conductivity, viscosity and temperature. The next version of the device will be smaller and incorporate more sophisticated sensors, says Dmitry Isakov, assistant professor at the Warwick Manufacturing Group, and leader of the study.

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