Air changes per hour (ACPH)

HVAC System
1

What is ACPH limits according to A,B,C,D class.?

2

https://m.terrauniversal.com/cleanrooms/iso-classification-cleanroom-standards.php

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3

What is the importance of acph?

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4

it help to maintaine area.
Proper ventilation.
And circulation of air.
Remove dust etc in case of OSD.

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5

It is really important to have and maintain the required classification inside the clean-rooms.
For example Classification of ISO 5 or ISO 8 are different and is utmost important to follow.

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6

ACPH is very important i pharmaceuticals to properly maintain the sterile and non sterile area. removes the particle from the area. It fulfill the ISO requirement.

7

hi everyone, let tell me air exchange limits according to A,B,C,D class. I did not see it in the GMP Annex 1 or ISO 14644-1.
I saw it in reference sites. But it is true or not, i dont know.
Many thanks