Hanna Instruments HI 83218 User Manual

Page 9

USING CUVETTES

• Proper mixing of the cuvette is done by shaking the cuvette, moving the cuvette up and down. The

movement may be gentle or vigorous. This mixing method is indicated with “shake gently” or “shake
vigorously”, and one of the following icons:

• Pay attention to push the cuvette completely down in the holder and to align the white point on the

cap to the indexing mark on the meter.

• In order to avoid reagent leaking and to obtain more accurate

measurements, close the cuvette first with the supplied HDPE plastic
stopper

and then the black cap.

• Each time the cuvette is used, the cap must be tightened to the same degree.
• Whenever the cuvette is placed into the measurement cell, it must be dry

outside, and free of fingerprints, oil or dirt. Wipe it thoroughly with
HI 731318 or a lint-free cloth prior to insertion.

• Shaking the cuvette can generate bubbles in the sample, causing higher

readings. To obtain accurate measurements, remove such bubbles by
swirling or by gently tapping the cuvette.

shake gently

shake vigorously