120
MD 610_2d 11/2019
DEHA (N,N-Diethylhydroxylamin)
with Vario Powder Pack
and Liquid Reagent
20 – 500 μg/l DEHA/ 0.02 – 0.5 mg/l DEHA
Use two clean vials (24 mm Ø) and mark one as blank for
zeroing (Note 2).
1.
Fill a clean vial with
10 ml deionised water
(this is the
blank).
2. Fill the second clean vial with
10 ml of the water
sample
(this is the sample).
3. Add the contents of
one VARIO OXYSCAV 1 Rgt
Powder Pack
straight from the foil into each vial.
4.
Close the vials tightly with the caps and swirl several
times to mix the contents.
5.
Add
0.20 ml VARIODEHA 2 Rgt Solution
to eachvial
(Note 4).
6.
Close the vials tightly with the caps and swirl several
times to mix the contents.
7.
Press
[ ]
key.
Wait for a reaction
period of 10 minutes
(Note 5).
After the reaction period is finished proceed as follows:
8.
Placethe vial (the blank) in the samplechamber making
sure that the
marks are aligned.
9.
Press
ZERO
key.
10. Removethe vial from the sample chamber.
11. Placethe vial (the sample) in the samplechamber mak-
ing sure that the
marks are aligned.
12. Press
TEST
key.
The result is shown in the display as DEHA.
Countdown 1
10:00
start:
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
1
2
3
4
6
7
1
Содержание Lovibond MD 610
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