What is Biofilm? What is Biofilm?

Biofilm exists from bacteria who attach by a self-produced slime. They create a layer which is very hard to remove. On this layer, even more, bacteria, as well as micro-organisms and ferments, can attach and develop.

A fully functioning biofilm is like a vivid fabric on the inside wall of pipes, storage tanks, water wells, etc. It is a complex cooperation of different types of micro-organisms who live each in their favourable climate. Even in the system of our drink water, more than 99% of the bacteria are part of the biofilm attached on the inner side of the pipes.

Glycocalyx, also called Extracellular matrix or EPS (Extracellular polymer substance), can include 90 or even 95% of the biomass of the biofilm, the rest are bacteria. As glycocalyx contains a lot of water, a surface which is covered by his biofilm as very slippery and gelatinous. Afterwards, the glycocalyx can capture other bacteria which will multiply and start building their glycocalyx.

A biofilm can contain different bacteria who produce corrosive chemicals. E.g. anaerobic sulphate reducing bacteria. These bacteria produce sulfuric acid which leads to corrosion of metal pipes. Also, the so-called iron-oxidizing can cause corrosion of metal which results in expensive reparations of the leaking pipes.

Biofilm also narrows the diameter of pipes and creates more resistance so less liquid can be pumped through. The result is a higher cost of energy.


NDV Ultrasonic ensures your systems and applications are free from limescale, bacteria and algae by combatting biofilm.


Our devices are non-toxic, chemical-free and require a low power supply. By using NDV Ultrasonic you reduce fuel emissions and carbon footprint, while sustaining a healthy environment for both humans and animals.


Not only does NDV Ultrasonic guarantee a longer lifespan of all systems, our products also reduce energy and maintenance costs and ensure no antifouling is needed.


NDV Ultrasonic devices operate on any system working with water or any other liquid (such as fuel, alcohol, milk, etc).

Possible Consequences Consequences Of Biofilm
  • Development of pathogen
  • Development of mycotoxins
  • Damaged liver
  • Weakened immune system
  • Raise costs on health
  • Oxidation of installations
  • Higher maintenance costs

… and many more consequences.
At worst, this leads to death!

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