LaMotte COD3 Plus, Operator'S Manual

Page: 8 / 119

8 COD3 Plus Colorimeter 10.18

CALIBRATING LaMOTTE PRE-PROGRAMMED TESTS
The LaMotte Pre-Programmed Tests have been pre-calibrated. Recalibration of
the pre-programmed tests by the user is not possible. However, a procedure to
standardize the calibration can be performed to obtain the most accurate readings or
to meet regulatory requirements.
The LaMotte Pre-Programmed tests are standardized with one standard solution. To
standardize over the full range of the test, the concentration of the standard should
be chosen from the high end of the range. Alternatively, if samples do not cover the full
range of the test, a standard should be chosen that is close to the concentration of
the samples.
The standardization procedure should be followed as often as required by regulations
and laws for compliance monitoring.
In the example below, the Aluminum calibration will be standardized.
Prepare a standard solution to be tested. In this example, 0.30 ppm ammonia
nitrogen.
1. Press and briefl y hold to
turn the meter on. The LaMotte
logo screen will appear for about
3 seconds and the
Main Menu
will appear.
Main Menu
Testing Menu
Editing Menu
12:00:00 001/500
2. Press
ENTER
to select Testing
Menu .
Testing Menu
006 Ammonia-N LRF
007 Ammonia-N LRS
008 Ammonia-N HR
014 Boron
12:00:00 001/500
3. Press or to scroll to
the desired test factor.
All Tests
006 Ammonia-N LRF
007 Ammonia-N LRS
008 Ammonia-N HR
014 Boron
12:00:00 001/500