Features:
Replacement p H electrode for p H-990, p H-217, p H-218, p H/EC-9853, p H-117, p H-118, p H-991, p H-3012, TDS/p H-9851, ORP/p H-999.
Widely used to test the the p H of aqueous solution/water.
100% brand new accessory for water quality tester.
Great laboratory p H electrode probe.
Suitable for most p H meter & controller with BNC-Q9 connector.
Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools & other water systems.