Tintometer Lovibond MD110 Mode D'emploi page 78

Methods
GB
FE M
Zero
Test
FE M
0.0.0
78
Iron, total (Fe in Mo)
in the presence of Molybdate
with VARIO Powder Pack
0.01 – 1.80 mg/l Fe
Fill a clean Mixing Cylinder (50 ml) with 50 ml of the water sample.
Add the contents of one VARIO (Fe in Mo) Rgt 1 Powder Pack
straight from the foil into the water sample (50 ml).
Close the Mixing Cylinder tightly with a stopper and invert several
times to dissolve the powder.
Use two clean vials (24 mm Ø) and mark one as blank for zeroing.
Add 10 ml of the prepared water sample to the vial (this is the
blank).
Close the blank tightly with the cap.
Fill a clean Mixing Cylinder (25 ml) with 25 ml of the
sample.
Add the contents of one VARIO (Fe in Mo) Rgt 2 Powder Pack
straight from the foil into the
Close the Mixing Cylinder tightly with a stopper and invert several
times to dissolve the powder (note 5).
Wait for a reaction period of 3 minutes.
After the reaction period is finished proceed as follows:
Fill the second prepared vial with 10 ml of the sample.This is the
sample.
Place the blank in the sample chamber making sure that the
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 8 seconds.
The display shows:
prepared water sample (25 ml).
MD110_2 03/2018
prepared water
marks