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A N A L Y S I S S E T U P

O P E R A T I O N

I N T E R V A L

O D E S

R E P O R T I N G I N T E R V A L

C O

P O R T

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s c r o l l s e l e c t i o n s

E N T a c c e p t C L R e s c a p e

• Select Sensitivity.

• Select High or Low Sensitivity depending on

the application (in most cases sensitivity

should be set to High).

The NOAnalysis Liquid program should be used

for the collection and processing of data from

the NOA. The COM Port Interval is normally set

at 1/4 second for data collection. Using a faster

interval (1/8 or 1/16 second) does not provide

any significant advantage and results in larger

data files. Slower intervals (1/2 or 1 second) will not provide sufficient resolution

to accurately fit the peak and should only be used if the computer cannot collect

data at 1/4 second. To set the COM port interval:

• Press CLEAR to return to the Analysis Setup Menu.

• Select Interval.

• From the Reporting Interval Menu, select COM PORT.

• Use the Arrow buttons to scroll to 1/4 second and press ENTER to save.

The printer is not used for liquid measurements and should be set to OFF.

Deproteinization Procedures

For both the Nitrite Measurement (Chapter 12) and Nitrate Measurement (Chapter

13) samples containing high concentrations of protein can either be directly

analyzed and the reagent replaced when foaming occurs or the samples can be

deproteinized prior to analysis. Any deproteinization procedure can be used and

two techniques that have been successfully employed are listed. Contamination

from nitrite or nitrate can occur during these procedures, especially if the

GE MOA 280i User Manual

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