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Soil pH Meter Pen for Soil, Hydroponics or Water- Use for soil and water hydroponics including growing tents, swimming pools, drinking water, aquariums, fish tanks, coco and rockwool. The Bluelab digital pH soil meter provides a compact, quick, and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Help your plants thrive by measuring pH and temperature to ensure that they are always in the optimal range.

Comprehensive Probe Care Kit Included-The Bluelab Probe Care Kit pH includes everything you need to maintain your pH pen, including probe care instructions, 18 ml single-use Bluelab Solution Sachets for calibration (two each of pH 7.0, pH 4.0, KCl solutions), and three plastic cups for mixing solutions.

Super Easy to Calibrate- You can set up our Bluelab digital garden soil tester with a simple two-point calibration process. Remember to calibrate the handheld meter before first use. Our efficient Bluelab pH soil test kit comes with a 30-day calibration indicator that can be easily viewed on a backlit LCD display. The digital pH meter will come with 1 x 20-ml sachet of each pH7, pH4, and KCl for INITIAL HYDRATION and calibration.

Thrive in the Toughest Environments- Our best digital soil pH test kit is made out of waterproof casing and is built for grower environments, not labs. It can withstand the KNOCKS, DROPS, and deep-water plunges that come with everyday growth. Our digital pool water tester is designed to FLOAT when it lands in any solution. You can combine a Bluelab pH meter with Bluelab Pulse Meter for full indoor garden nutrient monitoring in soil and water.

Advanced Dibber Now Included- Extend the life of the pH soil tester with the game-changing dibber or dibbler. The probe cover now acts as a dibber. The dibbler allows you to first press your pen into a substrate, remove the cover, and then take a reading in the indentation. This protects your Bluelab pH pen's probe, reducing the risk of wear and tear. Automatic temperature compensation ensures accurate readings. Bluelab's digital soil pH meter will take measurements in increments of 0.1 pH.