Oxygen is necessary for all living beings, even to inhabitants of the underwater world. For this purpose, that small fishes correctly developed, it is worth controlling constantly the level of oxygen saturation in an aquarium, the special test system from the German Tetra brand will help with it. The product allows to learn quickly O2 indicator in water, without leaving the house, for this purpose it is worth making sampling and to connect aquarian water to special reagent, the result will be ready in only a few seconds. The color table which is included in the package will help to decipher the obtained data.

Advantage:

• professional measurement of oxygen saturation of water in house conditions;
• simple use;
• fast obtaining result;
• economical packing.

Procedure of testing:
1. Wash a test test tube with the water which is subject to testing.
2. Fill a test tube with the water which is subject to testing to a mark of 15 ml.
Open bottles, having punctured a neck with a cap.
3. Turn a bottle with test reagent 1 upside down over a test tube and pour in a test tube of 5 drops of substance.
4. Turn a bottle with test reagent 2 upside down over a test tube and pour in a test tube of 5 drops of substance.
5. At once close a test tube and turn it upside down once to mix contents. Then again return it to initial
situation.
6. The brown deposit is formed. Put a test tube and wait 30 seconds.
7. Open a test tube then turn a bottle with test reagent 3 upside down over a test tube and pour in a test tube of 5
drops of substance.
8. At once close a test tube and turn it twice. The deposit will be dissolved, and test solution will gain red-violet color.
9. You hold a test tube approximately on 1 cm (on finger width) in front from a white surface of the color table. Find the shade, the most similar to color of test solution in the table
flowers, and read the corresponding value. After each
test carefully wash a test tube with tap water.

Packing: 3 tests in packing.

Producer: Tetra, Tetra GmbH, Germany Type of the testO2 (oxygen)