Bluelab BLU2100E Commercial Truncheon Meter
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<b>[Product Information]</b><br>
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<li>Commercial meter designed for hydroponic crops that require higher EC or CF requirements during the growing cycle</li>
<li>Fully waterproof and no calibration required</li>
<li>Auto sense on and off and no external switches or buttons</li>
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<img src='http://ecx.images-amazon.com/images/I/41s8aVfmeSL.jpg'></br>