Some time you just don't guess so well. Here I am puzzling over the output as it returns. There are many test gases
we can see very well, but this was a particularly tough costumer. The heat of the air stream was also 68 C, or 155 F.
That is pretty hot which is a disadvantage with the setup being tested. A lot of head scratching was to be done.
I guess that is why their call it research.