Airborne particulate classification
WHO GMP | US 209E | US Customary | ISO/TC (209) | EEC GMP |
Grade A | M 3.5 | Class 100 | ISO 5 | Grade A |
Grade B | M 3.5 | Class 100 | ISO 5 | Grade B |
Grade C | M 5.5 | Class 10 000 | ISO 7 | Grade C |
Grade D | M 6.5 | Class 100 000 | ISO 8 | Grade D |
This table gives a comparison of the various classifications for areas in terms of airborne particulate classification