Instruction Manual
pH 5+, pH 6+, Ion 6+
-11-
3. Press
ENTER
to confirm that the ppm value is the desired standard. The displayed
value now shows the corresponding mV reading for the selected ppm value
selected. Allow the reading to stabilise.
4. When the mV reading is stable, press
ENTER
to complete the 1
st
point calibration.
The display will show the next highest calibration standard value. Rinse the
electrode with clean water.
5. Dip the electrode into your next highest standard solution. Add ISA if required. Swirl
it gently. Press
CAL
key to begin calibration mode.
6. Press
ENTER
to confirm that the ppm value is the desired standard. The displayed
value now shows the corresponding mV reading for the selected ppm value
selected. Allow the reading to stabilise.
7. When the mV reading is stable, press
ENTER
to complete the 2
nd
point calibration.
The display will show the next highest calibration standard value. Rinse the
electrode with clean water.
8. To calibrate a 3
rd
point, repeat steps 6 & 7. To exit from 2-point calibration, press
CAL
key.
9. The ISE slope in mV value “
PXX mV
” will momentarily display before reverting to
ion measurement mode.