3 Pack Bluelab Bundle: pH 4.0 & 7.0 Calibration Solution 250ml & pH Probe KCI Storage Solution 100 ml + Twin Canaries Chart & Pipette
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<b>[Product Information]</b><br>
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<li>PH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope)</li>
<li>Store in a cool place out of direct sun and heat</li>
<li>They should be stored with the lids securely tightened</li>
<li>With easy pour nozzle</li>
<li>Twin Canaries Chart Included.</li>
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