My clean room certifier did not know how measure the desired 40fpm air flow across the demarcation from the buffer area to the ante area. How have others documented this?
It has been my experience that open architecture ante-area/buffer area designs don't work and can't meet this requirements because they weren't designed properly. You should consider visiting the CETA website (www.cetainternational.org) to find/consult with a certifier who can help you.
