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JOANLAB Official Store Magnetic Stirrer Stir Bar Size 15mm 20mm 25mm 28mm 30mm 35mm PTFE Magnetic Stirrer Mixer Stir Bars 10 pcs
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Magnetic Stirrer Stir Bar PTFE Magnetic Mixer Stir Bars (10X40mm, with Ring Shape, 10PCS ): Amazon.com: Industrial & Scientific
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