Selektope® keeps ship hulls free from Barnacle.
What is Selektope®?
Selektope® is a unique biocide leveraging biotechnology to enable more sustainable and efficient marine coatings.
Its powerful repellent effect prevents barnacle attachment, keeping hulls clean, reducing friction, and lowering fuel consumption and emissions.
What is Selektope?
As an innovative ingredient technology, Selektope® offers marine paint companies numerous possibilities to formulate high-performance marine antifouling paint systems that deliver reliable and continuous protection against barnacles and marine fouling.
I-Tech’s customers, the global paint manufacturers, can combine Selektope® with other substances in their paint formulations to create optimal protection.
Along with only seven other active substances, Selektope® is approved by EU biocidal legislation, the EU-BPR as well as by the corresponding authorities in Japan, Korea and China

Selektope® is a technology characterised by its selective action and high efficacy at extremely low concentrations. This creates opportunities, that in some cases, can reduce biocide release from a paint by more than 90 percent whilst still improving hull performance.
How Selektope works
Selektope® is a biocide with a unique mode of action, repelling barnacle larvae from a surface by temporarily stimulating a receptor, causing a hyperactive swimming behaviour which makes it impossible for the larvae to attach to the the surface.
It is a technology characterised by its selective action and high efficacy at extremely low concentrations.
How Selektope® works
When a barnacle larvae comes into contact with Selektope®, they becomes hyperactive and perform about 100 kicks per minute. The effect is reversible, and the larvae quickly return to their normal state when not exposed to Selektope®. In this way, the larvae simply cannot attach to a surface painted with Selektope® and, at the same time, the larvae are not damaged in any way.
After risk evaluation, Selektope®, as one of only a handful active agents, has been approved as environmentally acceptable on all important markets
Who benefits from Selektope®?
The Global paint manufacturers have the possibility on combining Selektope® with several other substances and polymers in their paint formulations to create optimal fouling protection.
The power of Selektope® will support the end-user with higher static performance in the antifouling coating. Selektope® will contribute to reduced fuel consumtion and emissions due to a barnacle free hull.
Biofouling is a known environmental issue within the shipping industry. Selektope® is a sustainable solution to keep the hull barnacle free. Frictional resistance can easily increase by more than 40% from barnacle fouling.
Less emissions
Less friction between the ship hull and water will result in less Green house gas emissions. The potential saving is estimated to 1000 million tons of CO2 if optimal hull conditions are achieved all across the industry.
Reduced transfer of invasive species
A multitude of marine species can be carried on a fouled ship hull to new environments, where they may survive to establish a population and become invasive, out-competing native species and multiplying into pest proportions.
Less biocidal leakage
Selektope has a powerful effect on barnacles even at ultralow concentrations, this opens up for the possibilities of paint formulations with less biocides and therefore less leaking of biocides to the marine environment.
Non-lethal mode of action
Selektope repels without killing the barnacle larvae and the effect is reversible. The molecule is also degradeble over time and does not bioaccumulate in marine species.

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