The PRX system is based on the Reflective Phantom Interface (RPI) technology, designed and patented by ProXentia, which exploits the properties of light reflected from surfaces with very low reflectivity. The PRX sensor is made using a material that, in contact with aqueous solutions, becomes almost completely transparent. The very little reflected light carries information on the molecules that are near the surface.
The surface of the PRX sensor is coated, in some small areas (“spots”), with receptors able to capture the molecules to be analyzed (for example mycotoxins) that could be present inside the sample. On the surface, there are multiple spots with various receptors that capture different types of molecules. The way these spots reflect light provides a direct measurement of the concentration of contaminants in the sample, all of them analyzed simultaneously.