Hanna Instruments HI 96760 User Manual

Page 7

MEASUREMENT PROCEDURE

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.

• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.
The blinking

“CAL” indicates that the

instrument needs to be calibrated first.

• Use a first syringe to fill one cuvette

with 4 mL of Glycerol, up to 5 mm
(0.2’’) below the rim. This is the Glycerol
Standard Reference.

• Place the cuvette into the cuvette holder

paying attention to the direction of the
light indicated by the arrow on the
instrument. Then put the light shield cap
on and ensure that the notch on the cap
is positioned securely into the groove.

• Press

CAL and the lamp, cuvette and

detector icons will appear on the display,
depending on the measurement phase.

• After a few seconds, the display will show

“100.0%”. The meter is now calibrated
and ready for measurement.

• Remove the Glycerol cuvette.

• Use the second syringe to add to a clean

cuvette 4 mL of maple syrup, up to 5
mm (0.2’’) below the rim. This is the
sample.

• Place the sample cuvette into the cuvette

holder paying attention to the direction
of the light indicated by the arrow on the
instrument. Then put the light shield cap
on and ensure that the notch on the cap
is positioned securely into the groove.

• Press

ANALYSE and the lamp, cuvette

and detector icons will appear on the
display, depending on the measurement
phase.

• At the end of measurement, the instrument

directly displays percent of light
transmittance as compared to Glycerol
Standard (fixed at one hundred percent)
on the LCD.

• Check in the manual to which color class

the transmittance value corresponds.

WARRANTY

• Turn the meter on by pressing

MARCHE/

ARRET. The display briefly shows all
tags on.