• Turn the instrument ON.
• Insert the first cuvette into the instrument and
press the
Read
key. Record the reading.
• Mark this position on the thicker white band on
the top of the cuvette with a water resistant
pencil.
• Insert the second cuvette into the instrument
and take a reading.
• Open the instrument lid, slightly rotate the
cuvette and take a new reading.
• Repeat the last step for the second cuvette until the reading is within 0.01 NTU of the value
obtained for the first cuvette.
16
