46
Color of Water
COLOR OF WATER
SPECIFICATIONS
Range 0 to 500 PCU (Platinum Cobalt Units)
Resolution 1 PCU
Accuracy ±10 PCU ±5% of reading at 25 °C
Typical EMC ± 1 PCU
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 420 nm
Method Adaptation of the
Standard Methods for the Examination of Water and Wastewater,
18
th
edition
, Colorimetric Platinum Cobalt method.
REQUIRED ACCESSORIES
0.45 μm membrane for true color measurement.
For other accessories see page 132.
MEASUREMENT PROCEDURE
• Select the
Color of Water
method using the procedure described in
the
Method Selection
section (see page 12).
• Fill one cuvette up to the mark with deionized water and replace
the cap. This is the blank.
• Place the blank (# 1) into the holder and close the lid.
• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.
• Remove the blank.
# 1
# 1
10 mL
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