Compressed air system qualification and 1 micron particle analysis

[ifserav]

Hi to everibody
I am performing the qualification of a compressed air system, do you know if for the medical device inustry, must we make the analysis of 1 micron particle size?, i[m using 0.5 and 5 microns in my protocol, and using the ISO 8573 acceptance criteria, but i do not know if the 1 micron is also a requirement for us.

Why does it criteria was stated in ISO 8573?

Thanks in advance.

Best regards