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Press any button to resume active measurements.
TO ENTER CALIBRATION MODE
Press and hold the
is replaced by "STD" and
TO ENTER SETUP MODE
Press and hold
is replaced by "SETUP" and
Release the button.
TO TURN THE METER OFF
While in measurement mode, press the
"POWER" and
Release the button.
pH MEASUREMENT & CALIBRATION
Make sure the meter has been
calibrated before use.
If the probe is dry, soak it in
HI70300
30 minutes to reactivate it. If
fouled, clean the electrode by soaking in cleaning solution
for 20 minutes, then rinse the tip and soak in storage
solution at least 30 minutes before use.
Rinse the electrode off well and shake off excess droplets.
Recalibrate before using. Submerge the probe in the sample
to be tested while stirring it gently. Wait until the
on the LCD disappears.
The LCD displays the pH value (automatically compensated
for temperature) on the primary LCD, while the secondary
LCD displays the sample temperature. If measurements are
taken in different samples successively, rinse the probe tip
thoroughly
10
→
button until "POWER" and
button until "STD" and
tag will appear.
storage solution for
to eliminate cross‑contamination.
†
tag. Release the button.
tag
tag.
button.
tag
tag
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