Thermo Fisher Scientific Ion Selective Electrodes Iodide User Manual
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Instruction Manual
Iodide Electrode
2
TABLE OF CONTENTS
GENERAL INSTRUCTIONS .......................................................................................................... 3
Introduction ..............................................................................................................................................3
Required Equipment.................................................................................................................................3
Required Solutions ...................................................................................................................................3
GENERAL PREPARATION............................................................................................................ 4
Electrode Preparation ...............................................................................................................................4
Electrode Slope Check (with a pH/mV meter).........................................................................................4
Electrode Slope Check (with an ion meter)..............................................................................................4
MEASUREMENT.............................................................................................................................. 5
Measuring Hints .......................................................................................................................................5
Sample Requirements...............................................................................................................................5
Units of Measurement ..............................................................................................................................5
MEASUREMENT PROCEDURE ................................................................................................... 6
Direct Measurement .................................................................................................................................6
Direct Measurement of iodide (using a pH/mV meter)............................................................................6
Direct Measurement of iodide (using an ion meter).................................................................................7
Low Level Iodide Determinations (using a pH/mV meter)......................................................................8
ELECTRODE CHARACTERISTICS............................................................................................. 8
Reproducibility.........................................................................................................................................8
Interferences .............................................................................................................................................8
Complexation ...........................................................................................................................................9
Temperature Influences..........................................................................................................................10
Electrode Response ................................................................................................................................10
Limits of Detection.................................................................................................................................11
pH Effects...............................................................................................................................................11
Electrode Life.........................................................................................................................................11
Electrode Storage ...................................................................................................................................12
ELECTRODE THEORY ................................................................................................................ 12
Electrode Operation ...............................................................................................................................12
TROUBLESHOOTING GUIDE .................................................................................................... 13
Meter ......................................................................................................................................................13
Glassware ...............................................................................................................................................13
Electrodes ...............................................................................................................................................13
Standards and Reagents..........................................................................................................................14
Sample....................................................................................................................................................14
Technique...............................................................................................................................................14
TROUBLESHOOTING HINTS..................................................................................................... 15
SPECIFICATIONS.......................................................................................................................... 17
ORDERING INFORMATION....................................................................................................... 17