With South Africa in lock down. We are not able to buy the right pressure sensors to work with the low pressures.

Instead Research is being done on UV sterilization. The exposure time needed as well as the distance from the air. The Sterilization tank will probably need to be a distributed component to keep costs low. The air velocity through a 20mm diameter pipe will be between 0.31 m/s and 0.03m/s for the specifications given and will probably be closer to the slower for the majority of the ventilating.

While we can't leave our houses there's still some programming to be done. Will try use smartphones to plot the pressure, flow and volume waveform into the lungs.