Maintenance Solutions for pH, EC/TDS, PPM Meters and Testers

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Testers and meters used to maintain healthy growing conditions need to be calibrated and regularly cleaned to keep the equipment working accurately.

pH: (chemistry) p(otential of) H(ydrogen)
TDS: total dissolved solids
PPM: parts per million
EC: electrical connectivity

Find pH, EC, TDS, PPM Meters and Testers here.

Growco is a trained and certified Bluelab retail and warranty outlet.

We are HAZMAT approved to safely ship all of your PH control needs. We take great care in insuring that your packages will get to you in perfect condition, without leaking or being damaged in any way.

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Sort by manufacturer: Bluelab, General Hydroponics, Generic, Hanna Instruments, Sunleaves

1382 ppm (EC/TDS) calibration solution - 230 ml

Calibration Solution allows you to calibrate your meter in moments.
$9.95

1413 ppm (EC/TDS) calibration solution - 230 ml

Calibration Solution allows you to calibrate your meter in moments.
$12.95

1500 ppm (EC/TDS) calibration solution - 230 ml

Calibration Solution allows you to calibrate your meter in moments.
$8.50

Bluelab EC Solution - 250 ml

Bluelab 2.77EC Solution is used as a reference or checking solution to ensure the cleanliness and proper functionality of EC/CF probes.
$6.79

Bluelab pH Probe Clean Calibration Kit

Experienced growers suggest a pH level between 5.5 and 6.5 for most hydroponically grown plants. A dirty pH probe can skew the readings of your pH meter, resulting in a harmful growing environment.
$25.50

Bluelab pH Probe KCl Storage Solution - 100 ml

?Maximize the life and response time of Bluelab pH pens and pH probes with this KCI Storage Solution.
$9.95

Electrode Cleaning Solution - 230 ml

You can double the life of your pH tester when using Electrode Cleaning Solution on a regular basis.
$14.35

Electrode Storage Solution - 230 ml

Use storage solution to greatly extend the life of your pH meter or tester probe. This step is important for ensuring that your equipment retains its accuracy.
$9.85

GH pH 4.0 AND pH 7.0

General Hydroponics Calibration Solutions are specifically formulated for electronic pH meter calibrations and designed for hydroponic solution determinations.
$14.25 - $36.75

GH pH 4.01 Calibration Solution

General Hydroponics Calibration Solutions are specifically formulated for electronic pH meter calibrations and designed for hydroponic solution determinations.
$7.50 - $19.35

GH pH 7.0 Calibration Solution

General Hydroponics Calibration Solutions are specifically formulated for electronic pH meter calibrations and designed for hydroponic solution determinations.
$7.50 - $19.35

Hanna Calibration Solutions

HANNA buffer solutions packets are perfect for single use calibration of your pH, EC TDS or Combo tester.
$1.15 - $26.95

Hanna Electrode Storage Solution - 500 mL

The electrode on a pH tester or monitor must be keep moist at all times to prevent damage to the tool.
$15.79

Sunleaves 1000 ppm (TDS) Calibration Solution - 3 oz

Calibration Solution allows you to calibrate your meter in moments.
$7.95

Sunleaves pH Electrode Storage Solution - 60 mL

Prevent damage to the electrode in your pH meter or tester during storage with a few drops of Sunleaves pH Electrode Storage Solution.
$5.95
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