Cerahelix combines DNA biotechnology with ceramic chemistry to create a new class of ceramic membranes. Our patented manufacturing process takes a DNA template approach to ceramic membranes that allows us to tune the membrane cut-off. We currently offer three different molecular cutoff membranes to meet your specific needs by their ability to separate different size molecules (size measured in Daltons).

PicoHelix (400 Da), NanoHelix (800 Da), and MesoHelix (1200 Da)


How do we make the PicoHelix?

Cerahelix manufactures the PicoHelix membrane using a patented DNA template technology. DNA has a size and shape that we use as a tool to form sub nanometer pores in a ceramic resulting in a membrane that separates to a higher purity than competing ceramic filters. The DNA ceramic membrane is coated onto the surface of the porous ceramic filter, then heat is applied which removes the DNA leaving behind a smooth, low fouling surface capable of separating dissolved solids in water.

Cerahelix picofiltration technology pushes the boundaries of ceramic membrane filtration.


Why use DNA to make a filter?

DNA makes pores in the ceramic membrane that are

  • linear
  • nearly identical in size
  • incredibly small (0.6nm to 0.8nm)

These features combine to make a membrane that filters at high flux, and can separate small molecules that are close to each other in size. This ability extends the size cutoff range beyond what is currently achievable by ceramic membranes. Therefore, Cerahelix filters can separate salts, metal ions and sugar molecules that are dissolved in water.