home *** CD-ROM | disk | FTP | other *** search
/ The Epic Interactive Encyclopedia 1998 / Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso / C / Cleanliness_unit / INFOTEXT < prev   
Encoding:
Text File  |  1992-09-03  |  197 b   |  6 lines
  1. Unit for measuring air pollution: the number
  2. of particles greater than 0.5 micrometres in
  3. diameter per cubic foot of air. A more usual
  4. measure is the weight of contaminants per
  5. cubic metre of air.
  6.