Hanna Instruments HI 9017 - Manual (Page 30)

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e.g. 6.95 at 5°C:
• press 6
• press decimal point
• press 9
• press 5
• press ENTER A
Value 6.95 appears on the left display with pH symbol blinking. If
there is a difference of 1 pH between the two displays, there will be a
long beep.
Otherwise,
• press the CON key.
The left display value is transferred to the right display and the left
display shows "P1-2".
Rinse the electrode and dip it with the temperature
probe into the second solution HI7009 or HI8009
(pH 9.18), the value of which for example is 9.39
at 5°C (read from the standard charts). Wait for 30
seconds.
• press 9
• press decimal point
• press 3
• press 9
• press ENTER B
The value "9.39" appears on the left display with a blinking pH
symbol. If there is a difference of 1 pH between the two displays, there
is a long beep.
Otherwise,
• press the CON key.
ENTER A 6 . 9 5 pH pH
CON
pH
4 cm (1½
")
HI 7009
ENTER B 9 . 3 9
pH pH
CON