Indoor Air Quality Testing (ISO14644-1)

Critical Facilities Solutions test each room to confirm the level of air quality against the Cleanroom Class DIN EN ISO 14644-1 standard for Cleanrooms and machine rooms which encompasses Data Center’s. The tests are done using a calibrated air particle counter. Critical Facilities Solutions aims to confirm that the Data Center and each room within it meets the minimum IS Class 8 for Data Center’s as per OEM best practice guidelines. A single Air Particle Count or Indoor Air Quality Test (IAQT) measures the volume of airborne particulate within one cubic meter (1m3) of air within the room. The ISO standard requires that a number of test be taken at different positions in the room depending on the size and shape of the room. The sum of the results is then divided and the average is the volume per cubic meter for that room.

The Process
1. Using a hand held or static air particle machine that has been properly calibrated collect one (1) air sample per 25 square meters of room space. (I.e. in a 100 sqm room a minimum of four (4) tests should be taken.

  • The location of each test should be documented and if you are looking to trend the air quality in a certain room future tests should be taken at the same location each time.

2. The particle machine should be at an elevated height of one (1) meter above the floor surface.

  • The particle machine should remain static during the test.
  • The machine should be set to complete each test over a one (1) minute (sixty (60) second) period.
  • During the test the machine will draw in one (1) cubic meter of air for analysis.

3. The machine should be set to test particles at 0.5 microns for Class 7 & 8 and 0.3 micron for Class 5 & 6.

4. The results of each test should be recorded. (I.e. test 1 = 3,100,000; test 2 = 2,400,012; test 3 = 832,000 etc) these results should be added together (6,332,011) and then divided by the number of tests (3) to get an average for the room (2,110.670) which in this example is a Class 8.

5. ISO table to identify the class achieved: