114560
Cell Test
COD
Chemical Oxygen Demand
Measuring 4.0 – 40.0 mg/l COD or O
2
range: Expression of results also possible in mmol/l.
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer.
Carefully pipette 3.0 ml
of the sample into a
reaction cell, close tight-
ly with the screw cap,
and mix vigorously.
Caution, the cell
becomes hot!
Suspend the bottom sed-
iment in the cell by swirl-
ing.
Heat the reaction cell in
the thermoreactor at
148 °C for 2 hours.
Remove the cell from
the thermoreactor and
place in a test-tube rack
to cool.
Swirl the cell after
10 minutes.
Replace the cell in the
rack for complete cooling
to room temperature.
Very important!
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) w
e recommended to use
Spectroquant
®
CombiCheck 50, Cat.No. 114695, or the
Standard solution for photometric applications, CRM,
Cat.No. 125028.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 50) is highly recommended.
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