1.1 Methods
Silica HR / Silicon dioxide HR
with Vario Powder Pack
1 – 90 mg/l SiO
2
1. Fill a clean vial (24 mm Ø) with 10 ml of the water
sample (Note 1), 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 the contents of one Vario Silica HR Molybdate
F10 Powder Pack straight from the foil to the water
sample.
6. Close the vial tightly with the cap and swirl several times
to mix the contents.
7. Add the contents of one Vario Silica HR Acid Rgt. F10
Powder Pack straight from the foil to the same water
sample (Note 2).
8. Close the vial tightly with the cap and swirl several times
to mix the contents.
9. Press [
] key.
Wait for a reaction period of 10 minutes.
After the reaction period is finished proceed as follows:
10. Add the contents of one Vario Silica Citric Acid F10
Powder Pack straight from the foil to the water sample
(Note 3).
11. Close the vial tightly with the cap and swirl several times
to mix the contents.
12. Place the vial in the sample chamber making sure that
the
marks are aligned.
13. Press TEST key.
Wait for a reaction period of 2 minutes.
After the reaction period is finished the measurement
starts automatically.
The result is shown in the display in mg/l Silica.
Countdown
2:00
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown
10:00
start:
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