Feature: 1. Widely used to test the the ORP of aqueous solution/water. 2. 100% brand new ORP electrode probe. 3. Great laboratory ORP electrode probe. 4. Suitable for most ORP meter and controller with BNC connector. 5. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. Specification: ORP-201H high-precision compound laboratory electrode has excellent waterproof and field applicability; it can be maintained, convenient, fast and accurate; it has a wide range of measurement; It is suitable for various ORP-Q9 type BNC plugs according to the needs of industry testing. Features: Widely used to test the the ORP of aqueous solution/water. 100% brand new ORP electrode probe. Great laboratory ORP electrode probe. Suitable for most ORP meter and controller with BNC connector. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. Specifications: Type: Laboratory Electrode Display: Digital Display Probe Type: Sensitive Crystal Ball Bubble Range: -2000 ～ +2000ORP Accuracy: 1mV Temperature Range: 0 ～ 50℃ Material: Polycarbonate Type of Electrode Plug: Q9 BNC: Upright Electrode Length:14.8cm Cable length:110cm/190cm(Optional) Package Size:17.8*6.5*3cm/7.01*2.56*1.18in Package Weight: 110cm:110g/3.88oz 190cm:120g/4.23oz Package List: 1 * ORP Electrode Package List: 1 * ORP Electrode