• ENSURE pH METER ACCURACY – Regularly calibrate your pH measurement devices with pH calibration reference solutions to ensure measurement accuracy. Always clean and calibrate your pH probes at two pH points for improved accuracy – pH 4.0 and pH 7.0. A well calibrated pH meter will always be more accurate and precise
• HELP YOUR PLANTS GROW – Optimal nutrient solution for plants starts with accurate pH probes. Ensure your pH is always on-point with regular pH calibration.
• FOR ALL BLUELAB pH DEVICES – Use with all Bluelab products that measure pH: Bluelab pH Pen, Bluelab Soil pH Pen, Bluelab Combo Meter, Bluelab Combo Meter Plus, Bluelab Multimedia pH Meter, Bluelab Guardian Monitor, Bluelab pH Controller and Bluelab Pro Controller.
• GET EVERYTHING YOU NEED – Combine pH 4.0 and pH 7.0 for the accurate 2-point calibrations. Add to Cart now.

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Warranty: 90 Day Woot Limited Warranty