<prompt> What is the acceptable limit of bacterial count in an OT for neurosurgery?50 per cubic feet1 per cubic feet10 per cubic feet5 per cubic feet  <response>: Bacterial exam of air is done by Various methods and upper limits in surgical theatres are 10 per cubic feet and 1 per cubic feet in surgical OT for neurosurgery Ref: Textbook of Microbiology Baveja 5th ed Pg 636 