Stirring microwave synthesis

It is next to impossible to achieve good mixing with traditional magnetic stir bars in the cylindrical vessels used in microwave synthesis. So scientists in Austria have designed a new stir bar.magnetic filter bars is becoming more popular thanks to the dramatically reduced reactions times and improved yields it offers. However, as the majority of these reactions involve a small narrow reaction vessel, traditional horizontal stir magnet bars often result in inefficient mixing which can cause temperature gradients to develop and reduce product yields.