13
2.
BUFFER 2
- after you selected the buffer 1 this option will let you
select the second buffer to use to calibrate the slope. You can choose
4.00 pH, 4.01 pH, 9.18 pH or 10.01 pH by using [
] and [
] keys
and pressing the [
↵
] to save your choice.
3.
STAND
- this is the actual pH calibration process, this line will
display the buffer to be used for STAND (OFFSET) calibration,
depending on the choice you made on
BUFFER 1
. (See Step by step
pH Calibration.)
4.
SLOPE
- this is part 2 of the pH calibration process, this line will
display the buffer to be used for SLOPE calibration, depending on
the choice you made on
BUFFER 2
. (See Step by step pH
Calibration.)
EFFICIENCY
-After saving the SLOPE a new efficiency will be
displayed for about 4 seconds and then will move to the next page.
Efficiency = (new slope/ ideal slope) x 100%
We recommend that you use a new electrode, if the electrode
efficiency is lower than 80%.
Step by step pH calibration
1. Press the [CAL/VIEW] key to go to pH Calibration page. If the
unit is password locked, remove the password lock first.
2. Select buffer 1 (7.00 or 6.86), by using the [
] or [
/
pH-Recal
.]
keys, then press the [
↵
] key to save your selection.
3. Select buffer 2 (4.00,4.01,9.18 or 10.01), by using the [
] or
[
/
pH-Recal
.] keys, then press the [
↵
] key to save your selection.
4. Clean the pH electrode and temperature probe with de-ionized or
distilled water.
5. Place the pH electrode and Temperature probe into buffer 1.
