6
CO
2
long-term test Correct
For the continuous, exact control of CO
2
content in the aquarium.
- Instructions for use: Please read carefully and keep in a safe place. -
Congratulations on buying this high-quality CO
2
long-term test from Dennerle. If used properly and treated with due care, this test will provide
a simple, convenient and precise means of monitoring the CO
2
content in your aquarium water - the essential basis for magnificent plant gro-
wth. Dennerle wishes you lasting enjoyment from your aquarium!
How the CO
2
long-term test Correct works
The CO
2
from the aquarium water diffuses through the bottom ope-
nings of the test container into the reaction chamber. Here it dissolves
in the special CO
2
indicator. After a short time, the CO
2
content in the
special indicator corresponds precisely to that in the aquarium water
(state of equilibrium).
The colouring of the special CO
2
indicator varies according to the CO
2
content: from • blue = not enough CO
2
through • green = ideal CO
2
content to • yellow = too much CO
2
. The level of CO
2
in the aquarium
can be read directly from the colour matching scale.
The special advantages of the CO
2
long-term test Correct
Conventional long-term CO
2
tests are filled with a mixture of aquari-
um water and “drop indicator”. In contrast, the CO
2
long-term test
Correct employs a high-purity, ready-to-use “ampoule indicator” which
has been developed especially by Dennerle.
This offers the following key advantages:
• Simplicity No additional measurement of carbonate hardness is
necessary. Only a single colour matching scale is required.
• Safety:
The CO
2
long-term test Correct indicates the correct CO
2
content at all times - irrespective of any other acids in the
aquarium-water, e.g. humic acids. The test also remains
unaffected by any changes in carbonate hardness resulting
from an increase in water hardness, evaporation or a
change of water.
• Accuracy: The CO
2
long-term test Correct enables direct determination
of the CO
2
content in milligrams per litre – avoiding the
need for additional water measurements and the laborious
practice of converting values in tables. The test is equally
efficient at low carbonate hardness levels!
What‘s what
Filling and using the CO
2
long-term test Correct
1.
Remove test container from clasp.
Pull off top part of test container.
2.
Take an ampoule of special CO
2
indicator and ensure that there is
no indicator in the neck of the
ampoule! For this purpose, shake
the indicator down to the bottom of
the ampoule (in the same manner
as a thermometer is shaken before
taking someone‘s temperature).
Open ampoule by twisting off the
sealing tab.
3.
Drip the entire contents of the
ampoule into the top part of the
test container.
4.
Slot bottom part of housing inclu-
ding conical reflector into the top
part. Check that the O-rings are fit-
ted correctly!
5.
Turn test container carefully and
insert container in clasp.
6.
Use the suction clip to secure the
CO
2
long-term test in an upright
position at a clearly visible point in
the aquarium where a gentle flow
of water prevails. Stick the colour
matching scale to the outside of the
front pane.
GB
Bottom part of test
container
Top part of test container
Conical reflector
O-ring
Clasp
Mounting bracket
Longlife suction clip
Special CO
2
indicator
Colour matching scale
1-09575_3040_GA_CO2_Langzeittest_GA Langzeittest Correct 18.8.03 22.07.2014 17:19 Seite 6
