In my humidifier nebulizer, black dots are visible. What is it and how often do I have to replace the A250 AQUA PRO?

The A250 Aqua Pro needs a certain start-up time when used for the first time. During this first phase, the filter material must soak up completely, the resin and granules must align properly, and the first bypass channels must close. After properly rinsing the A250 before insertion and after the first 2-4 tank fillings, the A250 is fully formed and no more activated carbon residues should be released into the water.Activated charcoal does not pose a health risk.

Which BONECO nebulisers is the A250 AQUA PRO compatible with?

The A250 is only needed for nebulizersCompatible with: Type U7133, U7135, U7142, U7144, U7145, U7147, U200, U300, U350, U600, U650, U700 Not compatible with: Type 7131, 7136, 7137, 7138