9-7
MAINTENANCE, PERIPHERALS
9.1.6
Burette Preparation (Titrant Filling)
Before starting a titration, the burette must be properly filled with titrant in order to obtain a
good and repeatable result. To fill the burette, follow the next steps and recommendations:
If necessary, clean the burette and make sure it is empty.
From the main screen press
.
Highlight
Prime Burette
option and press
.
Enter the number of times the burette needs to be rinsed (minimum three rinses are
recommend allowing air bubbles to be evacuated).
Press
.
Insert the aspiration tube into the titrant bottle only when the piston is going down
and has reached about ¼ from the upper end.
To avoid the presence of the air bubbles inside the burette, make sure to have a continuous
liquid flow inside the burette and a little air zone just above the liquid level at the first filling
movement. The next upward movement will evacuate the entire air. This way no air will be
left in the valve.
Sometimes during the Prime Burette process, slight finger tapping on the tubes is helpful to
evacuate captive air bubbles.
If air bubbles are still present:
Remove the aspiration tube from the titrant bottle.
Repeat burette preparation procedure.
If no success, clean the burette again.
Summary of Contents for HI 901
Page 2: ......
Page 6: ...1 2 INTRODUCTION ...
Page 8: ...2 2 SETUP ...
Page 18: ...2 12 SETUP ...
Page 20: ...3 2 USER INTERFACE ...
Page 28: ...4 2 GENERAL OPTIONS ...
Page 86: ...6 2 TITRATION MODE ...
Page 90: ...6 6 TITRATION MODE ...
Page 92: ...7 2 pH mV MODE ...
Page 100: ...7 10 pH mV MODE ...
Page 102: ...8 2 AUXILIARY FUNCTIONS ...
Page 110: ...8 10 AUXILIARY FUNCTIONS ...
Page 112: ...9 2 MAINTENANCE PERIPHERALS ...
Page 123: ...A1 1 APPENDIX 1 Appendix 1 Contents A1 TECHNICAL SPECIFICATIONS A1 3 ...
Page 124: ...A1 2 APPENDIX 1 ...
Page 128: ...A2 2 APPENDIX 2 ...
Page 134: ...A3 2 APPENDIX 3 ...
Page 138: ...A3 6 APPENDIX 3 ...
Page 140: ...A4 2 APPENDIX 4 ...