30
OPERA
TIONAL GUIDE
Two point calibration
From the
MENU
screen with pH highlighted, press the
CAL
key to begin the calibration process.
The monitor will suggest using the
HI70007
pH 7.01 buffer, but it also automaticaly recognize the
HI70004
pH 4.01 and
HI70010
pH 10.01 buffers.
Note: For two point calibration the buffer 7.01 pH must be used for the first point.
When the reading is stable and close to the selected buffer, the
Confirm
key will become available.
Press
Confirm
to accept and store the calibration point. The monitor will now prompt for the
second buffer .
To continue calibrating with a second buffer, rinse and submerse the pH electrode 4 cm (1½”) into
the second buffer solution and stir gently.
Monitor will recognizes automatically second buffer 4.01 or 10.01pH.
If
Escape
is pressed during the second buffer the display will return in
MENU
. Only the first
calibration point will be saved.
The monitor will store the two‑point calibration information and returns to MENU mode.