OxiTop
®
(-i/-IDS)
Operation
ba77059e01
03/2019
17
Preparing the
stirring platform
Preparing the
sample bottles
Preparing the
measuring head
Preparing the
samples
Sample volume [ml]
Measuring range
[mg/l]
Multiplier *
432
0 - 40
1
365
0 - 80
2
250
0 - 200
5
164
0 - 400
10
97
0 - 800
20
43,5
0 - 2000
50
22,7
0 - 4000
100
* for conversion of digits (only for the setting:
Unit...
[digit])
Too big a measuring range will lead to inaccurate results.
A measuring range selected too small will cause the results to be
not evaluable.
1.
Install a stirring platform for the sample bottles in a temperature-con-
trolled environment (e.g. in a thermostat cabinet or thermobox, see
operating manual of the thermostat cabinet or thermobox).
2.
Rinse the sample bottles with the water sample and let the water drip
off well.
3.
Check and specify the measurement settings at the measuring heads.
4.
Follow the specification (and application reports) and exactly measure
the oxygen-saturated (well homogenized) sample volume required.
To measure the sample volume, overflow measuring flasks or mea-
suring cylinders are normally used.
5.
Place the magnetic stirring rod in the sample bottle.
6.
Fill the measured sample volume into the sample bottle.
7.
Add nitrification inhibitor NTH 600 (see table).
