Assertion: clean room's particle | /r/HasProperty | acceptable
Facets:
value: in the air
type: LOCATION
value: in a cleanroom environment
type: LOCATION
value: per cubic meter
type: OTHER
Source sentences:
text: ISO 14644-5:2004 are used to specify the size and concentration of airborne particles that are acceptable per cubic meter in a cleanroom environment.
text: The air quality for clean rooms are described in Federal Standard 209 "Airborne Particulate Cleanliness Classes in Clean Rooms and Clean Zones" (A through D) where classes are named after the maximum number of particles of 0.5 micrometers or more in diameter which is acceptable in the air.