|  |  | | Note! IFR cam style Clean Room Screwdrivers available upon request. CRS100-1360FH supplied with a T-bar. |
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 |  | | Clean Room Standards
According to the United
States specification FED-STD-209D, Classes of cleanliness are defined by the number of particles per cubic foot.
Particle sizes shown in the following table.
Measured Particles Size (Microns) |
 | | | Class | 0.1 | 0.2 | 0.3 | 0.5 | 5.0 | 1 | 35 | 7.5 | 3 | 1 | - | 10 | 350 | 75 | 30 |
10 | - | 100 | - | 750
| 300 | 100 | - | 1,000 | - | - | - | 1,000 | 7 | |
10,000 | - | - | - | 10,000 |
70 | - | - | - | -
| 100,000 | 700 |
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