Metrohm 845 Eluent Synthesizer - Manual (Page 20)

2 Installation
845 Eluent Synthesizer / Instructions for Use 8.845. 8001EN
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2 Connect capillary to the components
Components from a bottle:
• Insert 6.1803.130 PTFE tubing 24 through the bottle attach-
ment into the component bottle (e.g. the combination
6.1602.160 bottle attachment GL 45 and 6.1608.030 bottle;
see Optional accessories section 5.2.4).
Components from an MPak (from Chata Biosystems, see section
5.2.5):
• Push the 6.1808.200 MPak coupling onto 6.1803.130 PTFE
tubing 24 by loosening the screw cap from the coupling
and pushing the smaller opening over the tubing. Then
screw the coupling into the cap:
• Click the 6.1808.200 MPak coupling onto the lower outlet of
the MPak.
2.6 pH Controller
The pH of the prepared mixture can, if necessary, be adjusted auto-
matically by using the (optional) extension kit. If the pH is to be adjusted
from one side then one pH Controller is required, adjustment from both
sides (without changing the titrant solution) requires two pH Controllers.
We recommend the use of 702 Titrinos as pH Controllers (for supply
package see Section 5.2.3). Other Titrinos can also be used (supply
package for required accessories see Section 5.2.3).
2.6.1 Tubing connection for pH Controller
If the pH is to be adjusted automatically after the mixing process then
adaptations are required to the tubing connections to the 845 Eluent
Synthesizer.
1 Replace bottle adapter 21
6.1602.180 Bottle adapter 21 must be replaced by 6.1602.190
Eluent bottle head.
• Screw off the 6.1838.000 FEP tubing connection(s) 20 from
6.1602.180 Bottle adapter 21.
• Screw the 6.1838.000 FEP tubing connection(s) 20 to M6
thread(s) of 6.1602.190 Eluent bottle head.