pH Meter Tester Buffer Powder Calibration Packs (2) - 1, pH 4.00 and 1, pH 6.86
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<b>[Product Information]</b><br>
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<li>Great for initial calibration of pH meters and testers</li>
<li>Calibration buffer powder dissolves easily in distilled water</li>
<li>ENSURE ACCURACY after long term storage</li>
<li>2 packs included - 1, pH 4.00 and 1, pH 6.86</li>
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