Why measure conductivity and temperature? Proper nutrient and temperature levels are crucial for achieving optimal plant growth. Over- or under-feeding your plants can lead to wasted resources and unhealth plants. The Bluelab Conductivity Pen and Probe Care Kit are your go-to tools for monitoring these essential variables, ensuring that your plants grow to their full potential. The Bluelab Conductivity Pen is a durable and precise handheld device that provides quick a accurate readings with just a single click. Made in New Zealand, this pen is built to withstand the daily rigors of a grower's environment. It's not just water-resistant; it's fully waterproof and even floats if it ends up in your reservoir. You can customize your readings thanks to its selectable units for conductivity and temperature, making it versatile for various needs. The flat electrode design makes it easier to clean anmaintain, while the auto-off and hold functions ensure efficient battery usage and easy capture of readings. An AAA alkaline battery is included, so you can start measuring right away. Maintaining your conductivity probes is a breeze with the Bluelab Probe Care Kit, which comes complete with all the essentials for regular cleaning and maintenance. The kit includes a standard solution and cleaner for verifying the accuracy of your probe after each cleaning. Additional tools like a chamois and a plastic cup make the cleaning process even more efficient. There's no need for calibration, and the packaging may vary. In summary, the Bluelab Conductivity Pen & Probe Care Kit offer an easy and efficient way to take the guesswork out of plant nutrition & health. Their robust design & user-friendly features make them invaluable tools for ensuring optimal plant growth.