eutech-instruments carbon dioxide gas Manuel D’Utilisation

Instruction Manual 

 

Carbon Dioxide Electrode

 

 

16

The quality of results depends greatly upon the quality of the standards. ALWAYS prepare fresh 
standards when problems arise. It could save hours of frustrating troubleshooting! Error may result 
from contamination of prepared standards, accuracy of dilution, quality of distilled water, or a 
mathematical error in calculating the concentrations. 
 
The best method for preparation of standards is by serial dilution. This means that an initial 
standard is diluted, using volumetric glassware, to prepare a second standard solution. The second 
is similarly diluted to prepare a third standard, and so on, until the desired range of standards has 
been prepared. 
 

If the electrode works properly in standards but not in sample, look for possible interferences, 
complexing agents, or substances which could affect response or physically damage the sensing 
electrode or the reference electrode. If possible, determine the composition of the samples and 
check for problems. See 

Sample Requirements 

and

 Interferences

. 

 

Be sure that the electrode's limit of detection has not been exceeded. Be sure that the analysis 
method is clearly understood and is compatible with the sample. 
 
Refer to the instruction manual again. Reread sections on 

and 

ELECTRODE CHARACTERISTICS. 

 
If trouble still persists, call Eutech Instruments Pte Ltd. at (65) 6778-6876 and ask for the Customer  
Services Department.