In my opinion, I don’t agree with the previous comment If I understand correctly about numerous trials. Instead, a company/manufacturer should have an established procedures with a defined operating conditions (units, lots, time etc) like @markabdelshahed has mentioned. First of all, conducting too many trials could be a waste of time/money if you can conduct much less trial but still prove the efficacy. Secondly, having an inconsistent amount of trials can make the process seems “fishy” or makes others question “why do you have to add more trial for this products?” “Maybe it’s not working as good as others” etc. A lot of time, there’s not a “woring”/”not working” situation, it could be in scalar such as 80%, 90% efficiency unit etc so you would have to run stats and by adjusting the “n number”, you can make a mistake of p-hacking and it would not be considered as reliable.