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• Leave the vials in the tube rack to cool to room temperature. Do not
shake or invert them anymore otherwise the samples may become
turbid.
• Select the program number corresponding to Oxygen Demand,
Chemical (COD) - LR on the secondary LCD by pressing PROGRAM
W and V.
• Place carefully the COD-vial
adapter in the instrument and
check that it fits properly.
• Place the blank into the holder.
• Press ZERO and “SIP” will blink on the display.
• Wait for a few seconds and the display
will show “-0.0-”. Now the meter is
zeroed and ready for measurement.
• Remove the blank.
• Place the sample into the holder.
• Press READ and “SIP” will blink during measurement.
• The instrument directly displays concentration in mg/L of oxygen
demand on the Liquid Crystal Display.
INTERFERENCES:
chlorides > 2000 ppm
COD LR
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