Hach Eclox, User Manual

Page: 45 / 124

45
8.3
Color, apparent (0–500 APHA platinum cobalt color units)
1. If installed, remove the
longpath adapter.
2. Fill a tube to the first line
(5 mL) with deionized water
or water that has no color.
3. Put the tube into the
left opening of the color
comparator box.
4. Fill a second tube to the
first line (5-mL) with
sample. Put the second
tube into the color
comparator box.
5. Hold the color
comparator box in front of a
light source. Turn the color
disc to find the color match.
6. Read the value in the
scale window.
Multiply the value by 5 to
get the result in platinum
cobalt color units.