User Guide

Instruction Manual Carbon Dioxide Electrode
3
EUTECH INSTRUMENTS PTE LTD.
CARBON DIOXIDE GAS-SENSING ELECTRODE
INSTRUCTION MANUAL
GENERAL INSTRUCTIONS
Introduction
Eutech Carbon Dioxide Gas-Sensing Electrode is used to measure carbon dioxide, carbonate, and
bicarbonate in aqueous solutions quickly, simply, accurately, and economically. With a flow-
through cap, the electrode can be used in flow-through applications.
Required Equipment
1. A pH/mV meter or an ion meter, either line operated or portable.
2. Semi-logarithmic 4-cycle graph paper for preparing calibration curves when using the
meter in the mV mode.
3. A magnetic stirrer.
4. Eutech Carbon Dioxide Gas-sensing Electrode, Code no. EC-C02-01.
Required Solutions
1. Deionized or distilled water for solution preparation.
2. Eutech Carbon Dioxide Standard, 0.1M NaHCO
3
, Code no. EC-SCS-CO1-BT. To prepare
this solution from your own laboratory stock, half fill a 1 liter volumetric flask with
distilled water and add 8.40 grams of reagent-grade NaHCO
3
. Swirl the flask gently to
dissolve the solid. Fill the flask to the mark with distilled water, cap, and upend several
times to mix the solution.
3. Eutech Carbon Dioxide Standard, 1,000 ppm NaHCO
3
as CO
2
, Code no. EC-SCS-CO2-
BT. To prepare this solution from your own laboratory stock, half fill a one liter
volumetric flask with distilled water and add 1.91 grams of reagent-grade NaHCO
3
. Swirl
the flask gently to dissolve the solid. Fill the flask to the mark with distilled water, cap, and
upend several times to mix the solution.
4. Eutech Carbon Dioxide Standard, 100 ppm NaHCO
3
as CaCO
3
, Code no. EC-SCS-CO3-
BT. To prepare this solution from your own laboratory stock, half fill a one liter volumetric
flask with distilled water and add 0.084 grams of reagent-grade NaHCO
3
. Swirl the flask
gently to dissolve the solid. Fill the flask to the mark with distilled water, cap, and upend
several times to mix the solution.
5. Eutech Carbon Dioxide Buffer Solution, Code no. EC-ISA-CO1-BT. To prepare this
solution from your own laboratory stock, half fill a 1 liter volumetric flask with distilled