Whether you need to measure pH in your swimming pool, aquarium, or hydroponics garden, you need a probe that will deliver accurate measurements day in and day out. This low maintenance, low cost pH sensor provides reliable readings in a range of environments, from greenhouses to science classrooms. This sensor stands up to the usual wear and tear with its durable polycarbonate body and built-in protection for the pH glass measuring surface. Compatible with all pH meters accepting a BNC connector.