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Room Pressurization Test

Service Details

The Room Pressurization Test is conducted to verify the ability of the room’s pressure system. In a cleanroom, positive pressure is maintained to prevent outside air from entering the room. However, in isolation rooms for infectious patients or those with airborne diseases, negative pressure may be necessary to prevent the spread of contaminants into the environment.

Testing Reference Standards

  • ISO14644-1
  • ISO14644-3
  • NEBB
  • IEST
  • ASHRAE 170
  • PIC/s

Air Quality Testing Objective

The objective of the air quality test is to perform Cleanroom Performance Testing (CPT) in cleanrooms, negative pressure rooms, and airborne infection isolation rooms, to ensure that the air conditioning systems within these rooms are working efficiently and in accordance with the specified standards. Prior to the CPT, all systems within the room must be completed through the Testing, Adjusting, and Balancing (TAB) process. The following is a list of testing and measuring procedures that will be performed

  • Airflow Volume Test to identify Air Change Rate
  • Filter Installation Leak Test
  • Room Pressurization Test
  • Airborne Particle Count Test
  • Temperature and Relative Humidity Test
  • Total Viable Bacterial Count and Total Viable Mould Count
  • Lighting Level Test
  • Sound Level Test
  • Room Recovery Test
  • Duct Leakage Test
  • Room Air Leakage Test


ISO 9001: 2015

NEBB Cleanroom
Performance Testing (CPT)

NEBB Testing & Adjust
and Balancing (TAB)

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