Electronic pH-meter with probe with suction cup factory calibrated. Scale(ladder) of measure from 0.0 to 14.0 pH, of a precision of ± 0.1 pH.
Feed by 4 piles of 1.5v AG-13.

Precision: ± 0.1 pH
Measure: 0.0 - 14.0 pH
Supply : 4 x 1.5v AG-13
Size 60x55x23 mm
Weight: 75 g
Conditions of use: 0 - 50 °C
Manual for Calibration.

Ideal to put in the tank of nutriments.
Ready-to-use.

Calibration manual of instruction:
Immerse the electrode in pH 6.86 (under the temperature of 25°C).
Allow the reading to stabilize and with a small screwdriver turn the calibration trimmer inside the battery compartment until the display shows is corresponding the calibration solution.
Immerse the electrode in pH 4.01 or pH 9.18 to verify.
After one minute, until the buffer solution value is correresponding the measurement temperature is obtained.