5. Carbonate concentration

Exercise 1:
Measure the carbonate concentration:

We plunged the test strip into the water of the aquarium. After waiting a short time, it coloured. At this we could read the result.
Result: 10°d


6. Nitrogen compounds:

Exercise 1:
Measure the concentration of the following nitrogen compounds:

Nitrate:
We plunges the test stick into the water of the aquarium. After the waiting time the test stick hasn’t coloured. After testing again we found out, that it was because the test stick was past his sell-by. Consequently we didn’t achieve a result.

Nitrite:
To find out the concentration of the nitrite in the water of the aquarium we filled the water in a little vessel up to the mark. We added a solution (reagent 1) and a powder (reagent 2). We could read the test result with a pattern on which we put the vessel on.
Result: 0mg/l

Ammonium:
We achieved the concentration of the ammonium in the water of the aquarium by filling a little vessel up to the mark with this water. We added 2 solutions.
Then we put in the test stick, after this we waited a short time and then we could read the result:
0mg/l


7. Compounds of phosphorus:

Exercise 1:
Measure the concentration of phosphor in the water of the aquarium:

To find out the concentration of the phosphorus, we filled again a little vessel with this water up to the mark. Then we added to solutions (phosphate 1 and phosphate 2)
Then we put in the test stick, afterwards we had to wait a few minutes and then we could read the result.
Result: 0