Ammonia Nitrogen; Calibration  Standards; Calibration Procedure - LaMotte DC1500 AMMONIA Manual

FOR EXAMPLE:
A fresh water sample at 20°C has a pH of 8.5 and the test result is 1.0 ppm as
total Ammonia-Nitrogen.
1. The percentage from the table is 11.18% (or 0.1118).
2. 1 ppm total Ammonia-Nitrogen x 0.1118 = 0.1118 ppm Unionized
Ammonia-Nitrogen
3. Total Ammonia-Nitrogen
Unionized Ammonia-Nitrogen
Ionized Ammonia-Nitrogen
CALIBRATION
 STANDARDS
The meter should be calibrated with ammonia nitrogen standards. The
calibration should be done with a distilled or deionized water blank and one
ammonia nitrogen standard of known concentration. The concentration of the
calibration standard should be similar to the expected concentration of the
sample that will be tested.

CALIBRATION PROCEDURE

1. Press and briefl y hold
turn the meter on. The LaMotte
logo screen will appear for about
3 seconds and the Main Menu
will appear.
2. Press ENTER
Menu.
to
to select Testing
1.0000 ppm
– 0.1118 ppm
= 0.8882 ppm
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
All Tests
008 Ammonia-N HR
12:00:00 001/500
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