1.1 Methods
Fluoride
with Liquid Reagent
0.05 – 2 mg/l F
Caution: See notes!
1. Fill a clean vial (24 mm Ø) with exactly 10 ml of water
sample (Note 4), close tightly with the cap.
2. Place the vial in the sample chamber making sure that
the
marks are aligned.
3. Press ZERO key.
4. Remove the vial from the sample chamber.
5. Add exactly 2 ml SPADNS reagent solution (Note 4)
to the water sample.
Caution: Vial is filled up to the top! (Note 8)
6. Close the vial tightly with the cap and swirl several times
to mix the contents.
7. Place the vial in the sample chamber making sure that
the
marks are aligned.
Press TEST key.
The result is shown in the display in mg/l Fluoride.
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
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