Ann: FRG Trials on Tuberculosis, page-319

Going on memory here from the 'after' AGM discussion that happened in Melb a couple of months ago.

Firstly I'm not expecting any results until probably early Feb, even though the 'test period' finishes around now. It will take a bit of time to put results in a form to release to market.

Secondly, given the testing is in the air conditioning system, and basically testing the air purification of other areas like the reception areas once the air has been through the TB wards. The big problems seem to be the TB can travel through the air conditioning system from the TB wards to other areas, so the testing is about the FRG stopping this spread.
Obviously inside the TB wards, you have people constantly infecting the air, so nothing is going to work fully in there while infected people remain in there.

The above is my understanding from November and made a lot more sense as a test. If the 'other' areas where air is circulated to remain free (or even much lower levels of TB ) then the test would have a good result.
"M. tuberculosis is carried in airborne particles, called droplet nuclei, of 1– 5 microns in diameter. Infectious droplet nuclei are generated when persons who have pulmonary or laryngeal TB disease cough, sneeze, shout, or sing. TB is spread from person to person through the air."

The tiny size of the droplet nuclei is what makes traditional air conditioning systems not very effective.

IMHO if the simple addition of FRG technology to existing systems works in these tests, orders would flood in as the cost of implementation would be much cheaper than some alternatives that are going to be very expensive, and possibly not as effective.