In unserem FAQ‑Bereich findet ihr Antworten auf die am häufigsten gestellten Fragen. Solltet ihr hier nicht fündig werden, zögert bitte nicht, uns direkt zu kontaktieren – wir helfen euch gerne weiter.
Yes, the drop count is correct. This is the reason why two bottles of indicator solution are included with the test set. With the new JBL CO2/pH Permanent test set the indicator solution is no longer prepared in the aquarium water. The indicator is adjusted to a fixed carbonate hardness so that incorrect measurements (as when humic acids enter the aquarium water) can no longer occur.
It is very likely that a bacterial biofilm has formed in the container. Please place the reaction vessel in hot water (> 40 °C) for approx. 10 minutes. In order to do so, it must be taken apart and then put together again afterwards. Please do not use boiling water, as this may cause damage to the plastic.
Please note two important points: _x000D_ _x000D_ 1) Cylinder: Reusable cylinders are TÜV tested and this is stamped on the cylinder. This test needs to be renewed every 10 years, with the bottom of the cylinder and the valve sealing and threaded joint being tested. _x000D_ _x000D_ 2) The carbon dioxide: _x000D_ Depending on its concentration, carbon dioxide is harmful in the air. _x000D_ The respiratory rate and pulse rate increase at a carbon dioxide concentration of 3-5%. Other symptoms are headaches, discomfort and ringing in the ears. Carbon dioxide concentrations of 8-10% and more cause these symptoms to become more pronounced. This may lead to cramps, fainting, apnoea and death from suffocation. _x000D_ _x000D_ One 500 g cylinder contains 500 g CO2. This is equal to 11.36 mol (chemical substance amount unit). One mol of a gaseous substance has a volume of 22.414 l under normal conditions (273.15 K, 101325 Pa), so that 500 g of CO2 result in a volume of 254.7 l. CO2 is heavier than air, so that it collects on the ground. This corresponds to a CO2 height level in the range of 12.735 mm = 1.27 cm for a room of 20 m². If it is mixed completely with the air in a room of 20 m² and a height of 2.5 m (corresponds to 50,000 l), this corresponds to a maximum gas concentration of 0.5 volume %, which is well below the dangerous level._x000D_
The fluid itself with the colour indicator is not harmful in any way with the high dilution in the tank and, in addition, it decomposes very quickly.
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.
No CO2 is generated when fertilising with so-called liquid carbon. Therefore the test is not able to indicate CO2, which means that the indicator always remains blue! If you add CO2 in gas form you need to increase the amount or the duration.
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