Bluelab pH Pens

The Bluelab pH Pen PENPH is an easy, handheld tool for monitoring pH and temperature levels. It ensures that plants receive a balanced diet of nutrients for healthy and sustained growth.  This handheld pH pen is waterproof and features a simple, two-point calibration process that takes readings directly from a solution. This model takes measurements in increments of 0.1 pH and fully compensates for temperature so that users can expect accurate readings with every test.  User-Friendly: This pen's design, from the simple buttons to the convenient probe protection cap storage feature, was designed with ease of use in mind. Two-point Calibration: Calibrate the pen probe with pH 7.0 and 4.0 solutions. The device displays a check to show the 30-day calibration cycle.  Simple Power: This model requires one AAA battery.  Error Detection: This device automatically detects temperature and pH range errors, calibration issues, and hardware issues. Regular cleanings help avoid errors and maintain accurate readings.   Bluelab Soil pH Pen Choose the optional Bluelab Soil pH Pen model for a tool that effectively measures pH and temperature in growing media and water solutions. This model has all the features of the  Bluelab pH Pen but also includes an extended glass tube pH probe and storage cap. With the storage cap on, this pen will penetrate most typical soil types, allowing the fragile probe to take accurate subsurface readings up to 8 inches deep. This model should be cleaned and calibrated on the same schedule as the Bluelab pH Pen.  Bluelab pH and Conductivity Starter Pack Choose the Bluelab pH and Conductivity Starter Pack model PENSTP for a complete package of pH, conductivity, and temperature monitoring tools, along with items to jumpstart your calibration and cleaning of the new tools.  This package includes the pH Pen PENPH, the Bluelab Conductivity Pen, and the Bluelab Probe Care Kit.  Bluelab Conductivity Pen: This pen model, PENCON, measures the conductivity and the total ionic content/dissolved salts in a solution. Keeping plant conductivity in an optimal range ensures the correct growth rate and structure.  Probe Care Kit: This care kit includes sachets of pH 4.0 and pH 7.0 calibrating solutions, a 2.77 EC standard solution, a probe cleaner, and other cleaning instruments.  Summary With a handheld monitoring pen from Bluelab, customers can keep plants growing at peak performance. Choose from the standard Bluelab pH Pen, the Bluelab Soil pH Pen, or the Bluelab pH and Conductivity Starter Pack.  Handy Features: Growers will love the portability, ease of use, care, and durability of Bluelab's products.  Keep in Mind: Product compatibility will depend entirely on a grower’s crop, soil, and other growing factors. Read more about the exact requirements for these products before making a purchase.