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4 x 25mm/1″ PTFE Stir Bars – use for yeast starters – SEE UPDATE
4 Pcs 25mm(1 inch) PTFE Magnetic Stirrer Mixer Stir Bar,White Color,Laboratory Bar,Stir Plate Bar,Stir Plate Magnet,Stir Rod Magnetic 25 mm is about 1″ Use along with an Erlenmeyer Fla…