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Hanna Calibration Fluids
We recommend calibrating digital pens weekly for readings you can trust. It's best to keep pH electrodes wet, and manufacturers recommend using Storage Solution to do this. Calibrate pH meters at both 4.0 and 7.0 to give your pen a "slope" reference. TDS pens must be calibrated with the appropriate reference solution based on brand and type. The Electrode Cleaner is for pH electrodes only. Use rubbing alcohol for TDS electrodes.

$15.95 500 ml Hanna pH 7.0 Qty
$15.95 500 ml Hanna pH 4.0 Qty
$15.95 500 ml Hanna TDS 1382 ppm Qty
$15.95 500 ml Hanna TDS 1500 ppm Qty
$15.95 500 ml Hanna EC 1413 microSiemens/cm Qty
$15.95 500 ml Hanna pH Electrode Storage Solution Qty
$15.95 500 ml Hanna pH Electrode Cleaning Solution Qty
$1.50 7.0 pH Buffer Packet Qty
$1.50 4.0 pH Buffer Packet Qty
$1.50 1500 pmm Packet Qty
$2.00 1413 Us EC Buffer Packet Qty


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