Directions of Use
Technical Specifications
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Taking a conductivity/nutrient reading
- Short press the ‘nutrient/units’ button to select conductivity.
- Insert the conductivity/temperature probe into solution where there is strong movement of the solution, or stir the solution with the conductivity/temperature probe.
- Wait 1-2 minutes or longer for the conductivity/temperature probe to reach solution temperature. The conductivity reading will stabilize to a constant value.
- If the solution you are measuring is outside the measurement range of the Combo Meter, an ‘Or’ (over range) will be displayed.
Taking a temperature reading
- Short press the ‘temp/units’ button to select temperature.
- Insert conductivity/temperature probe into the solution.
- Wait 1-2 minutes or longer for conductivity/temperature probe to reach solution temperature. The temperature reading will stabilize to a constant value. If the solution you are measuring is outside the measurement range of the Combo Meter, a ‘Ur’ (under range) or ‘Or’ (over range) will be displayed
Taking a pH reading
- Short press the ‘pH/calibrate’ button to select pH.
- Remove the storage cap from the pH probe and place the pH probe into the solution.
- Wait 1-2 minutes or longer for reading to stabilize to a constant value. The pH reading is displayed.
- If the solution you are measuring is outside the measurement range of the Combo Meter, a ‘Ur’ (under range) or ‘Or’ (over range) will be displayed.
Bluelab Combo Meter
Measurement Range (pH): 0.0 - 14.0−log[H+]Measurement Range (EC): 0.0 - 9.9 mS/cm
Measurement Range (CF): 0.0 - 99
Measurement Range (500 ppm / TDS): 0 - 4950 ppm
Measurement Range (700 ppm): 0 - 6930 ppm
Measurement Range (Temperature): 0 - 50 ˚C / 32 - 122 ˚F
Resolution (pH): 0.1−log[H+]
Resolution (EC): 0.1 mS/cm
Resolution (CF): 1
Resolution (500 ppm / TDS): 10 ppm
Resolution (700 ppm): 10 ppm
Resolution (Temperature): 1 °C / 1 °F
Accuracy at 25 ˚C / 77 ˚F (EC): ± 0.1 mS/cm
Accuracy at 25 ˚C / 77 ˚F (500 ppm / TDS): ± 50 ppm
Accuracy at 25 ˚C / 77 ˚F (700 ppm): ± 70 ppm
Accuracy at 25 ˚C / 77 ˚F (Temperature): ± 1 ˚C / ± 2˚F
Operating Temperature: 0 - 50 °C / 32 - 122 °F
Calibration (pH): Two point calibration pH 7.0 & pH 4.0 or pH 10.0
Calibration (EC): Not required
Calibration (Temperature): Not Required
Units: EC, 700 ppm, 500 ppm, °C, °F
Power source: 2 x AAA alkaline battery
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