9
COLOR • SMART3 COLORIMETER
Platinum Cobalt Method • No Reagents Required
RANGE:
0–1000 color units
MDL:
20 Cu
METHOD:
Color is determined by a meter that has been calibrated
with colored standards of known platinum cobalt
concentration. True color, the color of water in which the
turbidity has been removed, is measured.
SAMPLE HANDLING &
PRESERVATION:
Collect all samples in clean glassware. Determine color
as soon as possible to avoid biological or chemical
changes that could occur in the sample during storage.
INTERFERENCES:
Turbidity will interfere. Filter before testing.
PROCEDURE
1. Press and hold
until colorimeter turns on.
2. Press
ENTER
to select
TESTING MENU
.
3. Select
ALL TESTS
(or another sequence containing
033 Color
) from
TESTING MENU
.
4. Scroll to and select
033 Color
from menu.
5. Rinse a tube (0290) with color-free water (distilled or deionized water). Fill
to 10 mL line with color-free water.
6. Insert the tube into chamber, close lid and select
SCAN BLANK
.
7. Remove tube from colorimeter. Empty tube.
8. Rinse tube with sample water. Fill to 10 mL line with water sample.
9. Insert tube with sample water, close lid and select
SCAN SAMPLE
. Record
result in color units.
10. Press
to turn the colorimeter off or press
EXIT
to exit to a previous
menu or make another menu selection.
NOTE: If a test result using the SMART3 Colorimeter gives an over range
message then the the sample must be diluted. The test should be repeated on
the diluted sample to obtain a reading which is in the concentration range for
the test. See page 26.
