Hab mal direkt beim Hersteller angefragt. Die Antwort:
You are correct because of the low O2 there is not enough to create the reaction, thus it was deemed not appropriate for the application the CO-Pro was created for, which was the typical sport diver who is purchasing compressed air for recreational diving. I have to admit we did not do further testing to learn what the need amount of O2 was needed for the reaction.
Also wie vermutet vermuten die auch das O2 benötigt wird damit die Reagenz reagieren kann, nur wieviel wissen die auch nicht, und haben es auch nicht getestet.