21
METHOD PROCEDURE
• Press
Zero
. The display will show a 1 minute countdown prior to the zero. To skip
the timer, press
Zero
twice. The display will show “-0.0-” when the meter is zeroed
and ready for measurement.
• Remove the cuvette.
• Use a second 1 mL syringe and add 1 mL of
unreacted sample to the cuvette.
• Replace the plastic stopper and the cap. Invert
several times to mix.
• Insert the cuvette into the holder and ensure that
the notch on the cap is positioned securely in the
groove.
• Press
Read
. The display will show a 1 minute countdown prior to the measurement.
To skip the timer, press
Read
twice
.
When the timer ends, the meter will perform the
reading. The instrument displays the results in
mg/L
of
fluoride (F
–
).
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