Tropic Marin NO2 Pro Instrucciones página 5

EN
fields) and the narrow end face of the comparator is facing the
colour fields (cf. illustration on the Quick Start Guide). Now the colour
of the water sample is compared to the opposing colour fields by
daylight conditions. To do this, look into the open cuvette from
above. Move the sample on the colour card until the cuvette colour
and the colour field colour match exactly.
7. Read off the measured nitrite value under the relevant colour
field. If the colours do not match exactly, an intermediate value
can be estimated.
8. Rinse out the glass cuvette, the syringe and the syringe attachment
thoroughly with tap water after the measurement process.
Determining the nitrate level:
1. Shake the bottles before use!
2. Rinse out the glass cuvette with tap water and then several times
with aquarium water.
3. Fill the glass cuvette with exactly 15 ml of aquarium water using
the dosing syringe and place it in the comparator which serves as
a cuvette stand.
4. Place the dropper tip on the 1 ml dosing syringe, draw out 1 ml of
test reagent A and add it to the water sample. Close the glass
cuvette using the stopper, briefly shake the sample and place it
back in the comparator.
5. Shake the bottle with test reagent B vigorously in a horizontal
direction for approx. 30 seconds (the reagent must be well-
shaken). Then add 10 drops of test reagent B to the aquarium
sample, close the cuvette again, shake it briefly and place it back
in the comparator.
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6. After 3 minutes of development time, add 4 drops of test
reagent C, close the glass cuvette once again, shake it briefly
and place it back in the comparator.
7. After another 3 minutes of development time, place the compara-
tor on the white circles of the nitrate colour card in such a way
that the second free opening on the comparator (without cuvette)
is underneath the colour card (not on the colour fields) and the
narrow end face of the comparator is facing the colour fields (cf.
illustration on the Quick Start Guide). Look into the open cuvette
from above and compare it to the opposing colour fields by daylight
conditions. Move the sample on the colour card until the cuvette
colour and the colour field colour match exactly.
8. Read off the measured nitrate value under the relevant colour
field. If the colours do not match exactly, an intermediate value
can be estimated.
9. Rinse out the glass cuvette, the syringe and the dropper tip
thoroughly with tap water after the measurement process.
Using the "standard" to verify the test:
The shelf life of reagents depends on storage conditions and other
factors. If the functional capacity of the test is inadequate, there
will be no colour reaction during the test, even if nitrate levels are
particularly high. If the measurement result is below 1 mg/l (ppm), add
five drops of the reference solution "standard" to a new sample in
order to verify the reliability of the test. If the colour changes to pink
(2 mg/l (ppm)) when you carry out the test again, then the reliability
of the reagents is verified as good.
How to correct unfavourable values:
If the nitrate concentration in the water is too high, we recommend:
• a ssessing and, where necessary, reducing the feeding quantities
or enriching the food with Tropic Marin ® LIPOVIT / LIPO-
GARLIC;
• a ssessing and, where necessary, regulating the stocking rate;
• u sing Tropic Marin ® NP-BACTO-BALANCE and / or NP-
BACTO- PELLETS to reduce the nutritional level over the medium
term;
• e xchanging a proportion of the water on a regular basis.
Safety instructions:
DANGER
Solution A: Causes skin irritation. Causes serious eye
irritation. IF IN EYES: Rinse cautiously with water for
several minutes.
Solution B and C: Highly flammable liquid and vapour.
Keep away from heat / sparks / open flames / hot sur-
faces. No smoking.
Keep out of reach of children.
Shelf life and storage:
6 months after opening. Store in a cool, dark place.
Contents of package:
50 ml/1.69 fl.oz. of reagent A
20 ml/0.68 fl.oz. of reagent B
10 ml/0.34 fl.oz. of reagent C
5 ml/0.17 fl.oz. of reference solution "Standard"
1 glass cuvette 20 ml
1 dosing syringe 20 ml
1 dosing syringe 1 ml with dropper tip
2 colour cards
1 comparator
1 instruction for use
In order to protect the environment, the reagents for the Nitrite /
Nitrate-Test Professional are also available in affordable refill
packs!
EN
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