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Extech's Waterproof pH Electrode for Palm pH is designed for measuring pH levels in various environments, making it perfect for professionals or hobbyists alike. The automatic temperature compensation ensures accurate measurements even in varying temperatures, while the waterproof connector protects the electrode from damage when used in wet or humid conditions. This electrode is compatible with Extech's palm pH meter (sold separately) and has a 39 cable for easy use. The bulb-shaped tip design provides accurate measurements, making it ideal for a range of applications such as agriculture, water treatment, food processing, aquarium maintenance, and more!