14
c. Deleting data.
1.
Press
“Mode”
key until the “Delete” icon lit up. Press
"Clear/Enter"
key to go into “Delete” mode.
2.
Select “Delete All” or “Delete Each” mode by pressing the
“Up”
or
“Down”
key.
3.
In the “Delete all” mode, press
“Clear/Enter”
key to clear all
stored data. Deletion is now complete.
4.
In the “Delete Each” mode, use
“Up”
and
“Down”
key to
select data to be deleted. Then press
“Clear/Enter”
key to
delete. Deletion is now complete. The next set of saved data
will automatically move up a slot in the storage site.
5.
Press
“Mode”
key to exit “Delete” mode.
G. pH Buffers
The temperature coefficient of pH calibration buffers 4.01, 6.86,
7.00, 9.18 and 10.01 pH are stored inside the instrument. The
buffers used to calibrate the instrument must exhibit the same
temperature characteristics as the stored values.
Temperature coefficient of the pH buffers
℃
4.00
6.86
9.18
4.01
7.00
10.01
0
4.01
6.98
9.46
4.01
7.11
10.32
5
4.00
6.95
9.39
4.01
7.08
10.25
10
4.00
6.92
9.33
4.00
7.06
10.18
15
4.00
6.90
9.28
4.00
7.03
10.12
20
4.00
6.88
9.23
4.00
7.01
10.06
25
4.00
6.86
9.18
4.01
7.00
10.01
30
4.01
6.85
9.14
4.01
6.98
9.97
35
4.02
6.84
9.10
4.02
6.98
9.93
40
4.03
6.84
9.07
4.03
6.97
9.89
45
4.04
6.83
9.04
4.04
6.97
9.86
50
4.06
6.83
9.02
4.06
6.97
9.83
55
4.07
6.83
8.99
4.08
6.97
9.80
60
4.09
6.84
8.97
4.10
6.98
9.78
[Note:
The actual reading of the instrument can differ from the
values shown by
±
0.01pH.
]
