Tintometer Lovibond MD100 Instrucciones página 50

Methods
GB
Si Hr
0.0.0
Zero
!
Test
Si Hr
RESULT
50
Silica HR with Vario Powder Pack
1 – 90 mg/l SiO
2
Fill a clean vial (24 mm Ø) with 10 ml of the water sample (Note 1)
and perform zero calibration (see "Operation").
Add the contents of one Silica HR Molybdate F10 Powder Pack
straight from the foil into the water sample.
Close the vial tightly with the cap and swirl several times to dissolve
the powder.
Add the contents of one Vario Silica HR Acid Rgt F10 Powder Pack
straight from the foil into the same water sample (Note 2).
Close the vial tightly with the cap and invert several times to mix the
contents.
Wait for a reaction period of 10 minutes.
After the reaction period is finished proceed as follows:
Add the contents of one Vario Silica Citric Acid F10 Powder Pack
straight from the foil into the same water sample (Note 3).
Close the vial tightly with the cap and swirl several times to dissolve
the powder.
Place the vial in the sample chamber making sure that the
are aligned.
Wait for a reaction period of 2 minutes.
(Countdown can be activated, see page 43)
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l Silica.
marks
MD100_2 10/2014