Mantech L100 PeCOD, Operation Manual

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The L100 analyzer operates according to four COD ranges as per the following table:
COD range (ppm)
Advanced Blue < 25
Green < 150
Yellow < 1,500
Red < 15,000
4.2 Getting Started – Powering the Analyzer On
1. Place the L100 analyzer on a stable, level surface.
2. Plug the power supply into the appropriate connector on the back panel of the analyzer, then plug the
power cord into a power outlet (100
– 240 V~ / 45 – 60 Hz).
3. Touch the red power key on the top right of the analyzer to turn the instrument on. The LCD screen will
be displayed after several seconds and 'READY' above the POWER key will be illuminated in green.
4.3 Preparation of Solutions
For samples with a known COD range, the original sample should be diluted with the appropriate electrolyte as
per the table below. The calibration and blank solutions should also be prepared using the same dilution factor
as was used for the sample.
The following table lists the four COD ranges available and their corresponding dilution factors:
COD Range
(ppm)
Dilution Dilution Factor
Advanced Blue 0.7 - 20 3 parts X : 1 parts Advanced Blue electrolyte 1.33
Green 10 - 150 1 part X : 1 part Green Electrolyte 2
Yellow 40 - 1,500 1 part X : 9 parts Yellow Electrolyte 10
Red 80 - 15,000 1 part X : 49 parts Red Electrolyte 50
Note: (i) For the sample: X= the original sample
(ii) For the blank solution: X=COD free water
(iii) For the Reference/Calibration solution: X= the original calibrant solution supplied by MANTECH
For example, if you are analysing in the Yellow range;
1. Mix 1 part of your original sample with 9 parts Yellow Electrolyte
2. Mix 1 part of COD-free water with 9 parts Yellow Electrolyte to make your blank solution
3. Mix 1 part of the original Calibrant solution (supplied by MANTECH), with 9 parts Yellow Electrolyte to
make your "reference" or "calibration" solution