Aqua Master Replaceable pH ProbeAqua Master Tools Replaceable pH Probe BNC Connector The Aqua Master Tools replaceable pH electrode is designed for accuracy, durability, and simple installation. Its long double junction design ensures a longer service life, making it the ideal replacement for worn or aged electrodes. Compatible with multiple Aqua Master Tools models, this electrode is perfect for growers, aquarists, and lab users who need consistent pH readings. Features Wide