Hydroponic Aquaponic ph Calibration Buffer (16oz 7.0pH)
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<b>[Product Information]</b><br>
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<li>7.0 pH Calibration Solution</li>
<li>Verified by Labratory Results</li>
<li>A Full Pint Of Solution will last several hundred tests</li>
<li>Great Value, much cheaper than the other name brand</li>
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