Hanna Instruments HI 903 - Manual (Page 10)

10
QUICK START GUIDE
BEFORE PERFORMING THE FIRST TITRATION
Setup the Titrator
• Make sure that all of the titrator assemblies are properly installed (see Instruction
Manual, Setup section).
• Make sure that the beaker system is properly sealed against atmospheric moisture
(the fittings and tubes are correctly mounted).
• The desiccant had been properly dried.
Obtaining the Reagents
• The reagents (titrant and solvent) have to be suitable to the analysis requirements
(see Instruction Manual, Appendix 2 for list of preferred titrants and solvents).
Priming the Burette
• Remove the dispensing tube from titration beaker (unscrew the fitting and remove
the tube) and insert it in the waste bottle or separate waste container.
• From the Idle screen press .
• Highlight the Prime Burette option and then press .
• Enter the number of burette rinses. At least 3 rinses with the solution used for
titration are recommended (allowing air bubbles to be evacuated).
• Press to start.
• The message “Executing...” will be displayed.
Note: Make sure you have continuous liquid flow inside the burette. Do not use
during normal filling of the burette if you are not sure that air bubbles have been
completely evacuated. For accurate results, the aspiration tube, the dispensing tube
and the syringe must be free of air bubbles.
• Carefully wipe the end of the dispensing tube to remove excess titrant.
• Insert the dispensing tube in the corresponding hole of the titration beaker and
screw the fitting to seal the beaker.