Milwaukee MA841 spare membrane
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The Milwaukee MW600 dissolved oxygen meter uses an oxygen-permeable polytetrafluroethylene (PTFE) membrane (shown in picture) that is replaceable. When the membrane becomes wrinkled or has stretch marks, it's time to replace it. We suggest picking up an extra bottle of Milwaukee MA9071 oxygen electrolyte solution (used for calibration) at the same time.
For more information see our Aerating / Oxygenating Wort guide.
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