7
4.1.1. Press
key to turn on
，
press
key, select PH measurement mode
4.1.2. Check E-201pH composite electrode,check pH composite electrode glass bulb
whether or not keep wet,if the glass bulb damaged,the electrode cannot be used,if glass
bulb’s surface too dry need to be immerged into a saturated potassium chloride
solution for 24 hours to activate and reuse.
4.1.3 Insert the PH composite electrode and the temperature electrode into the
corresponding interface.
4.2. Meter Calibration:
4.2.1. Press
to enter into calibration mode, LCD displays the twinkling
“
”
indicate to enter into the first point calibration.
4.2.2. Wash the pH electrode in purified water and dry it, then immerge it into the pH 7.00
buffer solution, rock the electrode holder and then still, waiting for the data stable and
appear
“
”
, then again press key
, the LCD will appear a twinkling 7.00
pH, confirm the calibration is right then press
key to confirm the first point,
the
“
”
will appear in the upper right corner,prompt into the second point
calibration or press
key exit calibration mode.
4.2.3. Wash the pH electrode in purified water and dry it, then immerge it into the pH4.00
buffer solution, rock the electrode holder and then still, waiting for a stable data and
appear
“
”
, then again press key
, the LCD will appear a twinkling
4.00pH, confirm the calibration is right then press
key to confirm the second
point ,the
“
”
will appear in the upper right corner,prompt into the third point
calibration or press
key exit calibration mode.
4.2.4. Wash the pH electrode in purified water and dry it, then immerge it into the pH 10.01
buffer solution, rock the electrode holder and still, waiting
“
”
for the data stable and appear,
