pH Meters

General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease of use, which are important factors when the health of a valuable crop is at stake. Use 3 drops per 5 ml of solution.

The Sure Test Base pH Pen is our most affordable pH meter. Features a single touch auto buffer recognition for easy, error free calibration. Waterproof housing (IP65 rated). The display has an 0.1 resolution and an accuracy of +/- 0.3 Comes with 4x LR44 batteries.

The Sure Test GroGuru Base (Collector) is used to collect data from the various Stems (sold separately) with sensors. The Base then forwards this information to the cloud. A single Base can be used to communicate with up to 1,000 Stems depending on deployment. This is powered by an indoor rated 110 volt power supply. Simply plug it in and it is ready to go. Download the App: iOS/Android phone/tablet Apps make it possible for you to see trends and set thresholds to generate automated alerts.