TPS smartCHEM-Titro - Selecting the Ph Buffer Set

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4.2 Selecting the pH Buffer Set
The smartCHEM-Titro can be programmed to automatically recognise any of the following buffer
sets during pH calibration. All pH values listed below are at 25
O
C.
1. pH4.00, pH6.88, pH9.23
2. pH4.00, pH6.88, pH10.06
3. pH4.00, pH7.00, pH9.23
4. pH4.00, pH7.00, pH10.06.
To select the pH buffer set for automatic recognition…
1. Select the pH Buffer set-up menu.
( →
→→
→ F4:Setup →
→→
→ F1:pH Buffer ).
2. The primary buffer selection menu is now displayed…
Select Primary
Buffer
>F1:6.88pH
F3:7.00pH
The arrow indicates the current selection.
Press to select pH6.88 as the Primary Buffer.
Press to select pH7.00 as the Primary Buffer.
Press to quit without changing the current setting.
3. The secondary buffers selection menu is now displayed…
Select Secondary
Buffers
>F1:4.00/9.23pH
F3:4.00/10.06pH
The arrow indicates the current selection.
Press to select pH4.00 and pH9.23 as the Secondary Buffers.
Press to select pH4.00 and pH10.06 as the Secondary Buffers.
Press to quit without changing the current setting.
Notes
1. The selected buffer set is kept in memory when the meter is switched off.
2. The buffers are re-set to pH4.00, pH6.88 and pH9.23 during initialisation.
3. pH6.88 buffer is a DIN 19266 and NBS Primary-standard pH solution. Its use as the primary
buffer is highly recommended for the most accurate possible results. If pH7.00 buffer is used,
ensure that it is manufactured to at least 0.01pH accuracy. pH7.00 buffer has a buffer capacity
less than half that of pH6.88 buffer and is therefore much less stable.
4. pH9.23 and pH10.01 buffers are highly unstable. Avoid using these buffers if possible. Discard
immediately after use.