Hanna Instruments HI 93414 - Manual (Page 16)

16
In order to index a cuvette follow the next steps:
• Fill the cuvette with high quality water (<0.1
NTU) up to the 10 mL mark.
• Clean and oil the cuvette as described before.
• Turn the instrument ON.
• Insert the cuvette into the instrument and press
READ/TIMER . 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/
TIMER pressed and, 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.