LaMotte COD Plus Colorimeter 1922-EX2 User Manual
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TABLE OF CONTENTS
GENERAL INFORMATION
Packaging & Delivery ······································································ 5
General Precautions ········································································ 5
Safety Precautions ··········································································· 5
Limits of Liability ············································································ 5
Specifications ·················································································· 6
Contents and Accessories ································································ 7
EPA Compliance ············································································· 7
CE Compliance ················································································ 8
CHEMICAL TESTING
Water Sampling for Chemical Analysis ··········································· 9
Filtration ························································································· 10
An Introduction to Colorimetric Analysis ······································ 11
Reagent Blank ················································································· 12
Colorimeter Tubes ··········································································· 12
Selecting an Appropriate Wavelength ············································ 12
Calibration Curves ·········································································· 13
Standard Additions ········································································· 15
Sample Dilution Techniques & Volumetric Measurements ············ 16
Interferences ··················································································· 17
Stray Light Interference ·································································· 17
OPERATION OF THE COD PLUS COLORIMETER
Overview ························································································· 18
Power Source ··················································································· 18
Components ···················································································· 19
Quick Start ····················································································· 20
GENERAL OPERATING PROCEDURES
The Keypad ····················································································· 22
Sample Holders ················································································ 22
The Display & the Menus ······························································· 23
Looping Menus ················································································ 25
TESTING
Testing Menu ·················································································· 26
Sequences of Tests ··········································································· 27
General Testing Procedures ····························································· 28
Testing With the LaMotte Pre-Programmed Tests ·························· 28
Calibrating With the LaMotte Pre-Programmed Tests····················· 30
Measuring in the %T/ABS Mode ···················································· 32
COD PLUS COLORIMETER 4/03
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