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The HI9811-51 is an economical, wateproof, portable meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature (℃) with a single probe. The meter operation is simplified with dedicated buttons for measurement modes to be be displayed on the LCD and knobs for single point calibration of pH and EC/TDS. The HI9811-51 is most suitable for agricultural, greenhouse and hydroponic applications.

• 3 in 1 probe with pH, EC/TDS and temperature sensors
• Amplified pH electrode for immunity to electrical noise including from ballasts and pumps
• Large LCD with instructions