Tropic Marin NO2/NO3 Nitrit/Nitrat Test Nitrite (NO2–) and nitrate ions (NO3–) are formed from ammonium (NH4 ) as part of the nitrification process. Nitrite, which is highly poisonous to freshwater species, is produced in the first stage of the bacterial process. If the nitrification process works, nitrite is converted to nitrate in the second stage. Higher concentrations of nitrate in saltwater aquariums will end up inhibiting the growth of delicate corals. A danger posed by high nitrate content for all aquariums is the strong boost it provides to algae growth. In rare cases, nitrate shortages can also occur. Therefore, the concentrations of nitrite and nitrate in the aquarium water should be tested regularly. As a general rule, the nitrite concentration should be less than 0.2 mg/l (ppm) in all aquariums wherever possible. It is advisable to keep the nitrate concentration in freshwater aquariums below 50 mg/l (ppm), whereas the concentration should not exceed 20 mg/l (ppm) in saltwater applications. When nurturing hard corals, the aim is to keep the nitrate concentration below 10 mg/l (ppm). Lower limits for nitrate depend on the general conditions in the aquarium. Contents of package
20 ml / 0.68 fl.oz. of reagent A
20 ml / 0.68 fl.oz. of reagent B
10 ml / 0.34 fl.oz. of reagent C
1 glass cuvette 10 ml
1 dosing syringe 5 ml
1 colour card
1 instructions for use
Instructions Nitrite concentrations affect the nitrate measurement. Therefore, the nitrite concentration should also be measured and, if required, the nitrate results should be corrected before carrying out the nitrate measurement. High nitrite levels are usually found in tanks that are in their maturation phase or in tanks with nitrate filters. Determining the nitrite level:
Shake the dropper bottles before use
Rinse out the glass cuvette with tap water and then several times with aquarium water.
Fill the glass cuvette with exactly 5 ml of aquarium water using the dosing syringe.
Add 5 drops of test reagent A, close the glass cuvette using the stopper and briefly shake the solution.
Add 2 drops of test reagent C, close the glass cuvette once again and briefly shake it.
After 3 minutes of development time, place the glass cuvette on the white circles of the nitrite colour card and compare it to the opposing colour fields. To do this, look into the open cuvette from above. Move the sample on the colour card until the cuvette and the colour field match exactly. If the colours do not match, an intermediate value can be estimated
Determining the nitrate level:
Shake the dropped bottles before use
Rinse out the glass cuvette with tap water and then several times with aquarium water.
Fill the glass cuvette with exactly 5ml of aquarium water using the dosing syringe.
Add 10 drops of test reagent A, close the glass cuvette using the stopper and briefly shake the solution
Add 10 drops of test reagent B, close the cuvette ahain, shake it briefly and set it aside.
After 3 minutes of development time, add 4 drops of test reagent C, close the glass cuvette once again and briefly shake it.
After another 3 minutes of development time, open the test cuvette and place it on the white circles of the nitrate colour card and compare it to the opposing colour fields. To do this look into the open cuvette from above. Move the sample on the colour card until the cuvette and the colour field match exactly. If the colours do not match exactly, an intermediate value can be estimated.
Rinse out the glass cuvette and the syringe thoroughly with tap water after the measurement process.
Shelf life and storage: 6 months after opening. Store in cool, dark place. Measurement Range & Accuracy
Measurement range for nitrite: 0 - 2,0 mg/l (ppm=
Measurement range for nitrate: 0,5 - 50 mg/l (ppm)
Accuracy for nitrite: 0,02 mg/l (ppm)
Accuracy for nitrate: 0,5 mg/l (ppm)
Danger
H315 Causes skin irritation (Solution A)
H319 Causes serious eye irritation (Solution A)
H225 Highly flammable liquid and vapour (Solution B)
H226 Flammable liquid and vapour (Solution C)
Precautionary statements Solution A: P102 P305+351+338. Keep out of the reach of children. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if possible. Continue rinsing
Precautionary statements Solution B and C: P102 P210 Keep out of the reach of children. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. Do not smoke.
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