According to the specs, this meter will calibrate itself using a single solution (1413 μS/cm). You can always use the other cal solution as a "check," though.

Is this what your instructions say?

What part don't you understand?

Just put it in "cal" mode and dip it in! :thumbsup: It's automatic!


Calibration procedure

â?¢ From measurement mode, press and hold the /
MODE button until CAL is displayed on the lower
LCD.

â?¢ Release the button and immerse the probe in the
proper calibration solution: HI7031 (1413 μS/cm)
for HI98129

â?¢ Once the calibration has been automatically performed,
the LCD will display OK for 1 second and
the meter will return to normal measurement mode.
DreadedHermie Reviewed by DreadedHermie on . how to calibrate ppm on hanna hi98129 do i use the 1413us/cm solution or the 1500 ppm solution to calibrated Rating: 5