Biocide for ULSD, Heating Oil, Biodiesel and Gasoline

  • Solvent based
  • Water dispersible
  • Broad spectrum
  • Two types of chemistry

MicrobiKILL is a solvent-based preservative used to eliminate and/or prevent the growth of bacteria and fungi in finished fuels (e.g. ULSD, biodiesel, gasoline, bunker fuel oil).  MicrobiKILL is also used to prevent the biodegradation of crude, refined and feedstock oils and fats (e.g. poultry, soybean, aromatic, paraffinic, naphthenic) during storage.


A proprietary and synergistic blend, MicrobiKILL is:

  • Broad spectrum:  kills bacteria and fungi
  • Active in both phases of the system:  partitions into both fuel and water
  • Fast acting:  100% bacterial kill in just two hours
  • Two types of chemistry confuse the bacteria to keep it from becoming resistant to treatment

Being solvent based, MicrobiKILL is fully combustible and will not form combustion residues or hazardous byproducts when used.  MicrobiKILL is non-corrosive, non-emulsifying, and has long-term fuel stability.


MicrobiKILL imparts a minimum amount of sulfur and is approved for use in ultra low sulfur diesel applications.

Treat Rate:

1 gallon treats 10,000 gallons

1 pint treats 1,250 gallons

MicrobiKILL is a liquid packaged in pint containers or 5-gallon pails.  Refer to Safety Data Sheet for suitable materials of construction for handling and storing this product.  Improper handling of this product can be injurious to workers.  Observe all safety precautions shown on the label and in the Safety Data Sheet.  MicrobiKILL is not approved for use in aviation fuels.

Typical Product Characteristics

Active ingredients:

Methylene bis(thiocyanate)




2-(thiocyanomethylthio) benzothiazole




Inert ingredients 95.0%
Density at 25°C (77°F) 1.03 g/cm³
Weight per U.S. gallon 8.6 lb
pH (100 ppm in water) 6-7
Flash point 70°C 158°F

Comparative Testing

MicrobiKILL® was tested in the laboratory to compare its effectiveness with three other leading biocides.  The microorganisms used in the study were the bacterium Pseudomonas aeruginosa and the fungus Cladosporium resinae, both of which are commonly found in fuel.  The results of the study show that MicrobiKILL provides excellent results at the minimum recommended dose after one and four weeks (Figures 1 and 2).  Brand X provided similar results but costs 2-3 times as much as MicrobiKILL.  Brands Y and Z did not perform well, especially after 4 weeks.

Additional information

Weight N/A

5 Gallon Pail, Case of 1 Pint Jugs (12)


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