wtw Turb 350 IR, Operating Manual, Page: 16 / 42

Operation
58
Note
Always use the cuvette and the light protection cap together;
only in this way is the cuvette marked.
Aligning a marked
cuvette
A marked cuvette is aligned as follows:
Aligning an
unmarked cuvette
An unmarked cuvette is aligned as follows:
6 With the cuvette in this position, place an alignment
ring on the cuvette so that the arrow on the alignment
ring points to the mark on the enclosure.
7 Leave the marker ring on the light protection cap of
the cuvette. This cuvette is now permanently marked.
1 Insert the cuvette in the cuvette shaft.
2 Align the marked cuvette so that the arrow on the
alignment ring points to the marking on the enclo-
sure.
1 Insert the cuvette in the cuvette shaft.
2 Slowly rotate the cuvette by one complete rotation
(by 360 °) in small steps and hold the key de-
pressed while doing so. After each step, wait for a
moment until the display is stable. Watch the display
of the turbidimeter while you rotate the cuvette.
3 Turn the cuvette back to the position with the lowest
displayed value.
4 Leave go of the key.