In twin-layers, microalgae are immobilized by self-adsorption on a vertically oriented ultrathin layer (the substrate-layer). A second  thin layer (the source-layer) located beneath the substrate layer supports the microalgae with liquid growth medium. Using Twin-Layer technology, microalgae grow to the highest cell densities currently known. The proprietary technology supports the effortless, efficient and highly productive cultivation of a large variety of microalgae using natural sunlight.

Using Twin-Layer technology, Algenion is proud to announce that it has solved the major problems that have plagued microalgal biotechnology in the past:

• Reproducible cultivation of a large variety of microalgae in an open system without cross-contamination
• Effective supply of carbon dioxide to the cultures from the ambient atmosphere without the need for an additional external source of carbon dioxide
• Optimal light supply to algal cells due to short light paths (mm) in the ultrathin layers
• Microalgae sensitive to shear forces can be grown for the first time at a technical scale because they are immobilized
• Microalgae can be harvested as fresh weight or dry weight without the necessity to separate cells from a large volume of culture medium