6. Maintenance
6.1. Clean the instrument
Important note:
Never use cleaning such as turpentine, acetone
or similar products to clean the instrument including the display
and accessories.
Only clean the housing and accessories using a soft, damp cloth.
Mild soap solution may also be used. Dry the cleaned parts care-
fully with a soft cotton cloth.
CAUTION
When using chemicals or solvents, comply with the instruc-
tions of the producer and all local safety regulations.
6.2. Sensor cleaning
See the manual of the sensor in use.
4.7. Recognized buffers
Buffer solutions
The
sensION
™
+
PH 3
has in memory the following data (pH
values as a function of the temperature).
Technical buffers (DIN 19267)
4. Operation
9
ENGLISH
ºC
ºF
pH
mV
0
32
2.01
4.01
7.12
9.52
10.30
--
10
50
2.01
4.00
7.06
9.38
10.17
245
20
68
2.00
4.00
7.02
9.26
10.06
228
25
77
2.00
4.01
7.00
9.21
10.01
220
30
86
2.00
4.01
6.99
9.16
9.96
212
40
104
2.00
4.03
6.97
9.06
9.88
195
50
122
2.00
4.06
6.97
8.99
9.82
178
60
140
2.00
4.10
6.98
8.93
9.76
160
70
158
2.01
4.16
7.00
8.88
--
142
80
176
2.01
4.22
7.04
8.83
--
--
90
194
2.01
4.30
7.09
8.79
--
--
PH3 HACH_LANGE 0710.indd ANG:9
PH3 HACH_LANGE 0710.indd ANG:9
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8/7/10 16:39:54
