Hanna Instruments GroLine pH/EC/TDS Multiparameter Probe

The Hanna GroLine Multiparameter Probe measures the pH, EC, and TDS within a single body. HI1285-7 Probe: For use with the HI9814 GroLine Waterproof Portable pH/EC/TDS Meter HI1285-8 Probe: For use with the HI981420 GroLine Monitor for Hydroponic Nutrients HI1285-9 Probe: For use with the HI981421 GroLine Monitor for Hydroponic Nutrients with Inline Probe Additional Features Suitable for a wide range of applications: Hydroponics, Aquaponics, Greenhouse growers, etc. Built-in temperature sensor: Ensures fast and accurate readings, even during unexpected temperature fluctuations. Pre-Amplified pH Electrode: The pH electrode has a built-in amplifier which reduces the effects of electrical noise, which can come from motors and pumps that commonly operate in greenhouses. Designed to combat that electrical noise, a cloth junction allows ion movement within the probe and can also be extracted, leaving a fresh surface when readings become irregular or erratic. Amperometric EC/TDS Sensor: A two-pin amperometric sensor performs EC/TDS readings.