Hanna-instruments HI 901 Manual de usuario Pagina 132

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A2-6
APPENDIX 2
Slide the stirrer assembly up.
Put the beaker on a hotplate.
Heat gently until all the effervescence has ceased, then boil it for 1-2 minutes. Some
of the inactive tablet material may not dissolve; however, this should not interfere
with the titration.
Cool the solution to the room temperature and put the beaker under the stirrer
asembly.
Lower the stirrer assembly until it rest on its positioning collar.
Adjust the height of the stirrer by using the positioning screw of the positioning
collar to have the propeller as close as possible to the bottom of the beaker.
Press
to proceed to the second phase of the analysis.
This phase is a normal equivalence point titration.
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