1[Composite Electrode] Plastic shell non fillable composite electrode, which is a PH meter measuring elements, which measures the activity of hydrogen ions in aqueous solutions. 2[Glass Electrode] The pH meter consists of a special measuring probe (glass electrode) connected to the body for measuring and displaying pH readings. 3[BNC Connector] With BNC connector, suitable for most pH meters and controllers with BNC, so you can use it with confidence. 4[High Sensitive] PH electrode can improve the response peed, measurement accuracy and stability, corrosion resistance, to meet your various need. 5[Widely Application] Widely used in many situations, such as homes, aquariums, drinking water, swimming pools, aquaculture, laboratories, hydroponics, etc. 1 x PH Electrode Item Type: PH ElectrodeMaterial: Plastic, glassProduct Length: Approx. 14cm / 5.5inMeasuring Range: 0.00~ 14.00 PHResponse Time: 1minWorking Temperature: 0-60CTerminal: BNC plugCable Length: Approx. 1m / 3.3ftApplication: Homes, aquariums, drinking water, swimming pools, aquaculture, laboratories, hydroponicsWeight: Approx. 109g / 3.8oz