Assertion: polypropylene's use | /r/HasProperty | filter
Facets:
value: for liquids
type: PURPOSE
value: for gas
type: PURPOSE
value: for air
type: PURPOSE
Source sentences:
text: Other interesting non-woven uses include filters for air, gas, and liquids in which the fibers can be formed into sheets or webs that can be pleated to form cartridges or layers that filter in various efficiencies in the 0.5 to 30 micrometre range.