Kathon™ FP 1.5 Fuel Biocide
For operations where specific compliance mandates or existing specifications require Kathon™ FP 1.5
Fuelcare is a BPR registered supplier of Kathon™ FP 1.5, a traditional and broad-spectrum isothiazolone fuel biocide for the control of bacteria, fungi and yeast in stored fuels and fuel systems.
Kathon™ FP 1.5 is recognised for its extensive OEM fuel biocide approvals across diesel, aviation, kerosene and heating oils. It controls all common microbial fuel contaminants effectively at low treatment concentrations, making it a practical choice where existing OEM or facility specifications mandate its use.
Also supplied and referenced as Kathon™ Fuel 15 in certain markets and regions.

Industries
Marine, Offshore, Rail, Bus & Power Generation Systems Worldwide
Fuels
Diesel, HVO, Gas Oils, Kerosene, Petrol, & MGO Specifications
Approvals
UK BPR, EU BPR, REACH & Worldwide Approvals
Dose Rates
150ppm Preventative or 300ppm Curative Treatment Options
Kathon™ FP 1.5 Fuel Biocide
Kathon™ FP 1.5 is a traditional, broad-spectrum microbiocide for the control of bacterial, fungal, and yeast contamination in stored fuels and fuel systems.
Technical specifications
Kathon™ FP 1.5 utilises isothiazolone compounds as its active ingredient, providing exceptional broad-spectrum antimicrobial performance against bacteria, fungi, and yeast. It is formulated for maximum efficacy at minimal concentrations, with proven effectiveness in demanding industrial applications.
Preventative dosing at 150 ppm (0.15 kg per 1000 litres) offers continuous protection against microbial contamination. For existing microbial growth, a curative treatment at 300 ppm (0.3 kg per 1000 litres) is recommended.
Kathon™ FP 1.5 presents as a clear, colourless to pale yellow liquid, ensuring easy handling and seamless integration into existing fuel systems. It is fully compatible with standard fuel storage and dispensing equipment.
Kathon™ FP 1.5 exhibits excellent solubility across a wide range of fuel types, including diesel, HVO, gas oils, and kerosene, ensuring uniform distribution without separation or settling during storage. It maintains exceptional stability within diverse fuel matrices and is fully soluble in water.
Store in cool, dry conditions, away from direct sunlight. Containers should be kept tightly closed in a well-ventilated area to prevent moisture ingress and oxidation, maintaining product integrity.
Kathon™ FP 1.5 offers an extended shelf life when stored under recommended conditions, with product stability maintained throughout its operational lifespan. Regular testing is advised to confirm potency and performance consistency.
Kathon™ FP 1.5 is approved under the EU Biocidal Products Regulation (BPR) and is REACH compliant. It is endorsed by leading international maritime and aviation authorities and meets relevant OEM specifications for major fuel system manufacturers.
Certified for use in critical marine, offshore, rail, and power generation sectors. Kathon™ FP 1.5 complies with international fuel quality standards and is trusted by leading operators worldwide.

How To Order
Find the right option for your operations and location
Kathon™ FP 1.5 Product FAQs
Find answers to frequently asked questions about Kathon™ FP 1.5 and its applications.
Kathon™ FP 1.5 is primarily distinguished by its legacy OEM approvals and long-established presence across regulated sectors. Where specific compliance mandates or existing specifications require Kathon™ by name, Fuelcare can supply it as an approved source. For operations without these specific requirements, FuelClear™ M15 is an alternative solution.
Kathon™ FP 1.5 is typically specified where OEM contracts, regulatory frameworks, or existing site specifications mandate its use - most commonly in marine, rail, aviation, and certain industrial environments. If your operation is not bound by these requirements, we'd recommend discussing your needs with our technical team to ensure you're using the most suitable and cost-effective treatment.
Yes. Kathon™ FP 1.5 is compatible with diesel, HVO, gas oils, kerosene, petrol, and marine gas oil, and distributes uniformly without separation or settling.
Preventative dosing is 150ppm for ongoing microbial control. Curative treatment uses 300ppm to address existing contamination. Dosing can be adjusted based on fuel conditions and operational requirements.
When stored in cool, dry conditions away from direct sunlight in sealed containers, Kathon™ FP 1.5 maintains stable potency throughout its operational lifespan.
Kathon™ FP 1.5 is approved under the EU Biocidal Products Regulation and REACH, and meets OEM specifications across marine, aviation, and industrial sectors. For full approval documentation, please contact us.
