Hanna Instruments HI 98713 User Manual

Page 8

In order to index a cuvet follow the next steps:
• Fill the cuvet with high quality water (<0.1 FNU)

up to the line.

• Clean and oil the cuvet as described before.

• Turn the instrument ON.

• Insert the cuvet into the instrument and press

READ . Record the reading.

• Open the instrument lid, slightly rotate the cuvet

and take a new reading.

• Repeat the last step until you read the lowest

FNU value. Alternatively, keep READ pressed
and, after the first value is displayed, open the
lid and start rotating the cuvet until the lowest
FNU value is displayed.

• Mark this position on the thicker white band on

the top of the cuvet with a water resistant pencil.

• Always use this position to align it with the

sign on the instrument top.

In order to match multiple cuvets follow the next
steps:
• Fill some cuvets with high quality water

(<0.1 FNU) up to the line.

• Clean and oil the cuvets as described before.

• Turn the instrument ON.

• Insert the first cuvet into the instrument and

press READ . Record the reading.

• Record the position of the cuvet and the

displayed reading.

• Mark this position on the thicker white band on

the top of the cuvet with a water resistant pencil.

• Insert the second cuvet into the instrument and

take a reading.

MATCHING MULTIPLE CUVETS
Precise measurements require the use of a single cuvet. If it is not possible, the cuvet selection
and matching must be performed before taking measurements.