In soils or growing media, pH strongly influences the availability of the microorganisms to plants in the soil. Tried and trusted by growers all over the world, this essential tool is one of our top-selling products. EC meters measure the conductivity of the nutrient solution, which is directly related to the nutrient levels in the water. In addition, the Soil pH Pen is built to last, with a durable and reliable construction that ensures long-term performance.

Our products are designed to be easy to use, durable, and accurate, making them the go-to choose for professionals and hobbyists alike.By gathering the most accurate readings possible, you can get pH right, optimising your nutrient solution. The Bluelab pH Pen is the latest innovation for hand held pH meters and is the ultimate handy solution for measuring pH.

Note: Bluelab pH products should always be calibrated to 2 points using fresh pH 7 and pH 4 solutions.Gel filled non-refillable pH electrodes are general purpose probes for use in moderate to high ionic strength solutions that are free of oils, suspended solids and proteins. Whether you’re monitoring the pH of your reservoir, nutrient tank, or runoff, the Bluelab pH Pen delivers reliable and accurate results. The information is shown on the LCD display and with this vital information, you can now adjust the pH levels of your water with confidence. Experience the convenience and accuracy of the Bluelab pH Pen, and elevate your hydroponic growing to new heights.

Teamed with the Bluelab EC Pen or Bluelab ppm Pen, it is a handy, convenient and accurate system for ensuring optimum plant growth and health.The Bluelab pH Pen is a compact, quick and handy tool for measuring pH and temperature to ensure optimal plant growth and health.

When paired with the Bluelab EC or ppm Pen, it becomes a complete system for managing crops and maximising nutrient uptake. That’s why you need to regularly measure pH; if your medium is too alkaline or too acidic, your plant won’t be able to access all the nutrients they need. Ensure precise and accurate pH measurements with BlueLab pH Pens, the ultimate tool for monitoring and adjusting pH levels in your hydroponic or soil-based systems. Temperature affects the growth rate and structure of a plant so a solution temperature of 18 – 22˚C or 65 – 72˚F is recommended.Pour out a little Buffer 7 into a cup (enough that the probe will be immersed in the liquid) Turn on the meter and dip the probe into the solution. Once this step is complete calibration is now finished and a small tick will be displayed on the screen to show this. The easy-to-follow calibration process will ensure that your pH measurements remain accurate; if you’re using your pH meter every day, it will need to be calibrated more regularly.