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• Whenever the cuvette is placed into the measurement cell, it
• Shaking the cuvette can generate bubbles in the sample, causing higher readings. To obtain
• Do not let the reacted sample stand too long after reagent is added, or accuracy will be lost.
• It is possible to take multiple readings in a row, but it is recommended to take a new zero
• After the reading it is important to discard immediately the sample, otherwise the glass
• All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule
• In order to maximize accuracy, prior to a measurement follow the validation procedure to
Prepare the instrument for measurement as follows:
• Unpack the instrument by removing the dust protection sleeve from the instrument cuvette
• Place the battery in the instrument as described in the "BATTERY REPLACEMENT" chapter.
• Place the instrument on a flat table.
• Do not place the instrument under direct sun light.
To compensate the meter for the sample turbidity or color, the measurement takes place in two
phases. First, the meter is zeroed using the unreacted sample. After the reagents are added the
reacted sample is measured.
• Turn the meter on by pressing ON/OFF.
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must be dry outside, and completely free of fingerprints, oil
or dirt. Wipe it thoroughly with HI 731318 or a lint-free
cloth prior to insertion.
accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette.
reading for each sample and to use the same cuvette for zeroing and measurement.
might become permanently stained.
of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F).
be sure that the instrument is properly calibrated. If necessary, calibrate the instrument.
holder.
MEASUREMENT PROCEDURE
The display briefly shows all tags on.
STARTUP
12
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