There are a few important things to note from Professor...

There are a few important things to note from Professor Phillips's reply:

1) The market for ventitest includes "ventilators and respiratory support devices". So not just ventilators. The other big one would be CPAP machines IMO, which is a much bigger market.

2) The inbuilt calibration function in ventilators is not good enough to prevent "drift". These drifts are significant enough to compromise care, and so still requires regular external checks and calibrations, as regularly as daily sometimes.

3) The competitive advantage of ventitest against other external calibration devices is confirmed - ie. high fidelity, ease of use and disinfection etc.

I think there is a market for ventitest. So happy to load up a few more shares.