Table Of Contents - EUTECH INSTRUMENTS NITRATE EPOXY Instruction Manual

Nitrate Electrode

TABLE OF CONTENTS

GENERAL INSTRUCTIONS .......................................................................................................... 3
Introduction ..............................................................................................................................................3
Required Equipment.................................................................................................................................3
Required Solutions ...................................................................................................................................3
GENERAL PREPARATION............................................................................................................ 4
Electrode Preparation ...............................................................................................................................4
Electrode Slope Check (with pH/mV meter) ...........................................................................................4
Electrode Slope Check (with ion meter) ..................................................................................................4
MEASUREMENT.............................................................................................................................. 5
Measuring Hints .......................................................................................................................................5
Sample Requirements...............................................................................................................................5
Units of Measurement ..............................................................................................................................6
MEASUREMENT PROCEDURE ................................................................................................... 6
Direct Measurement .................................................................................................................................6
Direct Measurement of Nitrate (using a pH/mV meter)...........................................................................6
Direct Measurement of Nitrate (using an ion meter)................................................................................8
Low Level Nitrate Measurements (using a pH/mV meter) ......................................................................8
Low Level Nitrate Determination (using an ion meter) ...........................................................................9
ELECTRODE CHARACTERISTICS............................................................................................. 9
Reproducibility.........................................................................................................................................9
Interferences ...........................................................................................................................................10
Temperature Influences..........................................................................................................................11
Electrode Response ................................................................................................................................11
Limits of Detection.................................................................................................................................12
pH Effects...............................................................................................................................................12
Electrode Life.........................................................................................................................................12
Electrode Storage ...................................................................................................................................12
ELECTRODE THEORY ................................................................................................................ 12
Electrode Operation ...............................................................................................................................12
TROUBLESHOOTING GUIDE .................................................................................................... 14
Meter ......................................................................................................................................................14
Plastic-ware ............................................................................................................................................14
Electrodes...............................................................................................................................................14
Standards and Reagents..........................................................................................................................14
Sample....................................................................................................................................................14
Technique...............................................................................................................................................15
ORDERING INFORMATION....................................................................................................... 18
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Instruction Manual