LaMotte OCTET COMPARATOR & BI-COLOR READER - Manual (Page 2)

PROCEDURE
1.
Place the Bi-Color Reader (2151) on table with the open side facing
the operator.
2. Slide the Octet Comparator between the arms of the Bi-Color
Reader, with the labels facing the operator.
3. Fill three test tubes to the line with sample water. Follow the
individual test kit instructions to react one tube. The other two tubes
will be used as blanks.
4. Insert the treated sample into the left-hand opening in the top of the
Octet Comparator.
5. Insert the Distilled Water Ampoule (2748) into the opening in the
Bi-Color Reader directly behind the reacted sample.
6. Insert the two test tubes with the unreacted samples into the
openings in the Bi-Color Reader on either side of the Distilled Water
Ampoule.
7. Slide the Octet Comparator until the
bottom of the upper row of standards is
level with the top of the Bi-Color
Reader. Hold the comparator so natural
light shines through the test tubes, and
compare the reacted sample to the first
and second color standards in the upper
row of the Octet Comparator. If the color
matches a standard, record the result. If
the color does not match a standard,
continue.
Blank Tubes
(Untreated Samples)
Distilled
Water
Ampoule
Reacted Sample
Octet
Comparator
TOP VIEW
Bi-Color
Reader