Hanna Instruments HI 88703 - Manual (Page 19)

19
NORMAL MEASUREMENT
This type of measurement is best suited for regular readings, when the sample is stable and normal
accuracy is required. In normal mode, the measurement takes about 10 seconds and the lamp is ON
for a minimum period of time (about 7 seconds).
CONTINUOUS MEASUREMENT
This measurement mode is suitable when many measurements have to be taken in a short period of
time. The mode is useful to evaluate a very fast settling sample. This measurement mode is
recommended for indexing cuvettes.
• Press the Read key to take the measurement.
The display will show “ READ” in the left side
and blinking dashes. The dashes and lamp icon
will appear during different measurement
phases.
• The result is displayed in the selected units.
• Wipe the cuvette thoroughly with a lint-free
cloth to remove any fingerprints, dirt or water
spots.
• Apply silicone oil on the cuvette and wipe with
a lint-free cloth to obtain an even film over the
entire surface of the cuvette.
Note: It is very important to oil the cuvette,
especially for low turbidity values (< 1
NTU) to hide the glass imperfections
which can influence the reading.
• Place the cuvette into the instrument. Align
the mark from the cuvette with the sign on the
instrument top
• Close the lid.
Note: If you have a cuvette with indexing mark,
place the cuvette into the instrument with
the indexing mark aligned with the sign on
the instrument top.