A brilliantly simple three-in-one portable solution, the Bluelab Combo Meter takes care of all three nutrient uptake fundamentals simultaneously. The easy-to-use, lightweight handheld meter has two probes on 2m leads; a combined conductivity and temperature probe which requires no user calibration (the conductivity reading being automatically compensated for temperature), and a double-junction pH probe (replaceable when necessary) which calibrates at the push of a button.
A calibration indicator reminds the user when recalibration is due. Its large format backlit display will show conductivity in your preferred units and temperature in either Celsius or Fahrenheit. Powered by 2 x AAA alkaline batteries (included), with a power-saving auto shut-down.