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The reason is often an incorrect use of the test. It is important to shake the test vigorously for precisely one minute. All the other important steps can be read in the instructions.
1. Fill 10 ml of sample water with distilled water to 300 ml. _x000D_ 2. Follow the instructions for fresh water. _x000D_ 3. Multiply the test result by a factor of 30.
The liquids of one reagent are empty, the powder is still half-filled. Can't you just buy individual bottles? No, because the JBL refill packs always contain all the reagents as a set and need to be replaced together. There is a reason for this. The reagents age when they are first opened and should therefore be disposed of completely as soon as one of the reagent bottles is empty. The unequal consumption is due to the fact that some test procedures require an individual number of drops, depending on the existing value in the aquarium water. So one needs more, the other less. The liquids can be emptied completely. In the case of powder, you cannot use the quantity you need if there is only a residual amount left. Thus the quantity is on the generous side, so that the range is ensured even with low liquid consumption.
Have you lost your record sheets, used them all up, or need them in another language? _x000D_ In the appendix of this FAQ you will find PDF files for printing them out in German, English and French.
Yes, the dedicated potassium tube is available as a separate spare part under this name. The tube is also supplied with each test set.
Stelle deine Frage an das JBL Service Team.