15
• Insert the cuvette into the instrument and press
the
Read
key. Record the reading.
• Open the instrument lid, slightly rotate the
cuvette and take a new reading.
• Repeat the last step until you read the lowest
NTU value.
• Alternatively, keep the
Read
key pressed to
make continuous readings. After the first value
is displayed, open the lid and start rotating the
cuvette until the lowest NTU value is displayed.
• Mark this position on the thicker white band on
the top of the cuvette with a water resistant
pencil.
• Always use this position to align it with the
sign on the instrument top.
In order to match multiple cuvettes follow the next
steps:
• Fill some cuvettes with high quality water
(<0.1NTU) up to the 10 mL mark.
• Clean and oil the cuvettes as described before.
MATCHING MULTIPLE CUVETTES
Precise measurements require the use of a single cuvette. If it is not possible, cuvette selection
and matching must be performed before taking measurements.
