Bacteria, moulds and yeasts can all grow rapidly in fuel tanks! Free water, warmth and condensation in the fuel form the basis for growth of the Diesel Bugs.

The addition of environmentally friendly biodiesel to the fossil diesel offers microbes an excellent source of nutrition. Microbes grow more than ever and form increased amounts of “biomass”. This leads to clogged filters, corrosion and to engine failure.

Standard grades of diesel are clear and usually light yellow. The smallest discoloration can be a sign of the Diesel Bug. To be sure, you have to test it!

The CMT Diesel Bacteria Test can be used to test the water phase of diesel fuels for the presence of bacteria. In case of a blocked filter remains of the blockage are being applied to the dip slide and incubated to examine the cause of the blockage, which may have ocurred due to bacteria or other contaminants.


The Fuel Bacteria test:

  • provides evaluation of Diesel Bug count (bacteria, yeast and moulds altogether)
  • is easy to use
  • provides precise and reliable results
  • allows fast and safe handling
  • is suitable for all qualities of diesel fuel inclusive biodiesel.