Hanna-instruments HI 96713 Manuel d'utilisateur télécharger pdf (Page 12)

MEASUREMENT PROCEDURE

• After the reading it is important to discard immediately the sample, otherwise the glass

might become permanently stained.

• All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule

of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F).

• In order to maximize accuracy, prior to a measurement follow the validation procedure to

be sure that the instrument is properly calibrated. If necessary, calibrate the instrument.

STARTUP

Prepare the instrument for measurement as follows:

• Unpack the instrument by removing the dust protection sleeve from the instrument cuvette

holder.

• 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.

The display briefly shows all tags on.

• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.

The blinking “ZERO” indicates that the

instrument needs to be zeroed first.

• Fill one cuvette with 10 mL of unreacted

sample, up to the mark.

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Hanna-instruments HI 96713 Manuel d'utilisateur Page 12