Google - Hello !! I want to know regarding engineering controls required to prevent cross?

... contamination in shared facility. If HEPA filter is in desinged in both return and supply AHU then is this necessary to change supply HEPA filter

... contamination in shared facility. If HEPA filter is in desinged in both return and supply AHU then is this necessary to change supply HEPA filter of tablet processing areas if we already replaced return HEPA filters for segregation approach

or:... contamination in shared facility. If HEPA filter is in desinged in both return and supply AHU then is this necessary to change supply HEPA filter of tablet processing areas if we already replaced return HEPA filters for segregation approach

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