eutech-instruments carbon dioxide gas User Manual
Instruction Manual
Carbon Dioxide Electrode
2
TABLE OF CONTENTS
GENERAL INSTRUCTIONS ......................................................................................................................................... 3
Introduction ............................................................................................................................................................. 3
Required Equipment................................................................................................................................................ 3
Required Solutions .................................................................................................................................................. 3
Required Equipment................................................................................................................................................ 3
Required Solutions .................................................................................................................................................. 3
GENERAL PREPARATION .......................................................................................................................................... 4
Electrode Preparation .............................................................................................................................................. 4
Checking Membrane ............................................................................................................................................... 4
Changing the Membrane ......................................................................................................................................... 4
Connecting the Electrode to the Meter .................................................................................................................... 4
Electrode Slope Check (with pH/mV meter)........................................................................................................... 4
Electrode Slope Check (with ion meter) ................................................................................................................. 5
Checking Membrane ............................................................................................................................................... 4
Changing the Membrane ......................................................................................................................................... 4
Connecting the Electrode to the Meter .................................................................................................................... 4
Electrode Slope Check (with pH/mV meter)........................................................................................................... 4
Electrode Slope Check (with ion meter) ................................................................................................................. 5
MEASUREMENT ............................................................................................................................................................ 5
Measuring Hints ...................................................................................................................................................... 5
Sample Storage........................................................................................................................................................ 6
Sample Requirements.............................................................................................................................................. 6
Units of Measurement ............................................................................................................................................. 6
Sample Storage........................................................................................................................................................ 6
Sample Requirements.............................................................................................................................................. 6
Units of Measurement ............................................................................................................................................. 6
MEASUREMENT PROCEDURE .................................................................................................................................. 7
Direct Measurement ................................................................................................................................................ 7
Direct Measurement of Carbon Dioxide (using a pH/mV meter) ........................................................................... 7
Direct Measurement of Carbon Dioxide (using an ion meter) ................................................................................ 8
Direct Measurement of Carbon Dioxide (using a pH/mV meter) ........................................................................... 7
Direct Measurement of Carbon Dioxide (using an ion meter) ................................................................................ 8
ELECTRODE CHARACTERISTICS ........................................................................................................................... 9
Reproducibility........................................................................................................................................................ 9
Interferences ............................................................................................................................................................ 9
Effect of Dissolved Species..................................................................................................................................... 9
Temperature Influences........................................................................................................................................... 9
Electrode Response ............................................................................................................................................... 10
Limits of Detection................................................................................................................................................ 11
pH Effects.............................................................................................................................................................. 11
Electrode Life ........................................................................................................................................................ 11
Electrode Storage .................................................................................................................................................. 11
Interferences ............................................................................................................................................................ 9
Effect of Dissolved Species..................................................................................................................................... 9
Temperature Influences........................................................................................................................................... 9
Electrode Response ............................................................................................................................................... 10
Limits of Detection................................................................................................................................................ 11
pH Effects.............................................................................................................................................................. 11
Electrode Life ........................................................................................................................................................ 11
Electrode Storage .................................................................................................................................................. 11
ELECTRODE THEORY............................................................................................................................................... 11
Electrode Operation............................................................................................................................................... 11
Carbon Dioxide Chemistry.................................................................................................................................... 12
Carbon Dioxide Chemistry.................................................................................................................................... 12
ELECTRODE APPLICATION .................................................................................................................................... 13
Carbon Dioxide Content of Wines and Carbonated Beverages ............................................................................ 13
Carbonate Content in Groundwater....................................................................................................................... 14
Carbonate Measurements in Concentrated Ammonium Hydroxide...................................................................... 14
Carbonate Content in Groundwater....................................................................................................................... 14
Carbonate Measurements in Concentrated Ammonium Hydroxide...................................................................... 14
TROUBLESHOOTING GUIDE................................................................................................................................... 15
Meter ..................................................................................................................................................................... 15
Glassware .............................................................................................................................................................. 15
Electrodes .............................................................................................................................................................. 15
Standards ............................................................................................................................................................... 16
Sample................................................................................................................................................................... 16
Technique .............................................................................................................................................................. 16
Glassware .............................................................................................................................................................. 15
Electrodes .............................................................................................................................................................. 15
Standards ............................................................................................................................................................... 16
Sample................................................................................................................................................................... 16
Technique .............................................................................................................................................................. 16
TROUBLESHOOTING HINTS.................................................................................................................................... 17
Checking the Electrode Inner Body ...................................................................................................................... 19
SPECIFICATIONS ........................................................................................................................................................ 20
ORDERING INFORMATION ..................................................................................................................................... 20