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Biofilms are complex communities of surface-attached bacteria that are formed when free-floating bacteria in the bulk system water attach to surfaces. The bacteria are encapsulated within a polymeric protective coating, sometimes called slime. This can cause severe issues in water systems that can be extremely hard to control. The molecules that form the biofilm are bound together with a locking mechanism termed the calcium bridge which high doses of biocides cannot break.


Problems faced when biofilm is present include:


  • Corrosion damage - acid produced as a metabolic by-product by the bacteria can cause Microbiological Influenced Corrosion (MIC) , rapidly reducing equipment life 
  • Harmful waterborne pathogens - pathogens can grow in biofilm that are harmful to human health, including the bacteria associated with Legionnaires disease
  • Increased energy costs - biofilms are very insulating, reducing heat transfer efficiency 4 times more than calcium scale deposits


The bioeXile biofilm cleaning process works by disruptingthe calcium bridge to allow biofilm to be destroyed by the biocide. Biofilm is removed more effectively with the use of bioeXile than with biocide alone or biodispersants, as it works with biocide additions. The process disrupts the persistor mechanism of the cells, making it more difficult for biofilm to re-form.

Did you know...

bioeXile is up to 1250 times more efficient against biofilms than biocide alone and 278 times more efficient than biodispersants plus biocide.

When to use bioeXile

The prepackaged one-pound water soluble bags can be used:


  • Periodically to enhance biocide additions
  • Before a system is taken out of service for cleaning or layup
  • Whenever a biofilm problem is detected

Contact us today to find out how the bioeXile process from NCH Chem-Aqua can solve your biofilm problems.