Feature: 1. Replacement pH electrode for pH-990, pH-217, pH-218, pH/EC-9853, pH-117, pH-118, pH-991, pH-3012, TDS/pH-9851, ORP/pH-999. 2. Widely used to test the the pH of aqueous solution/water. 3. 100% brand new accessory for water quality tester. 4. Great laboratory pH electrode probe. 5. Suitable for most pH meter and controller with BNC-Q9 connector. 6. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. 7. Suitable for most pH meter and controller with BNC-Q9 connector. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. 8. 100% brand new accessory for water quality tester.Great laboratory pH electrode probe. Specification: The electrode is composed by the pH glass electrode and reference electrode. It is the measuring of pH meter, using to measure the pH of aqueous solution/water. Features: Replacement pH electrode for pH-990, pH-217, pH-218, pH/EC-9853, pH-117, pH-118, pH-991, pH-3012, TDS/pH-9851, ORP/pH-999. Widely used to test the the pH of aqueous solution/water. 100% brand new accessory for water quality tester. Great laboratory pH electrode probe. Suitable for most pH meter and controller with BNC-Q9 connector. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. Specifications: Type: Laboratory Electrode Model: pH-990, pH-217, pH-218, pH/EC-9853, pH-117, pH-118, pH-991, pH-3012, TDS/pH-9851, ORP/pH-999 Suitable SKU: E1595, E1597, E1598, E1274, E0919, E1135, E1147, E1149, E1150, E1273 Display: Digital Display Probe Type: Sensitive Crystal Ball Bubble Range: 0.00 ～ 14.00pH Resolution: 0.01pH Accuracy: ±0.1pH Temperature Range: 0℃ ～ 50℃ (32℉ ～ 122℉) Color: Black Material: ABS Type of Electrode Plug: Q9 BNC: Upright Length of pH Electrode Line: Approx. 1.1m / 43.3in Item Size: Approx. 65 * 25mm / 2.56 * 0.98in (H * D) Item Weight: Approx. 41.7g / 1.47oz Package Size: Approx. 7.5 * 5 * 6.5cm / 2.95 * 1.97 * 2.56in Package Weight: Approx. 43g / 1.52oz Package List: 1 * pH Electrode Package List: 1 * pH Electrode