GENERAL CHARACTERISTICS ITEM DESCRIPTION | SEPERATES PARTICLES INTO 5 DESCENDING CALIBRATIONS: 5.5 MICRONS AT 0 PCT RESPIRABILITY,5.5 TO 3.5 MICRONS AT 20 PCT RESPIRABILITY,3.5 TO 2.0 MICRONS AT 50 PCT,2.0 TO 0.3 MICRONS AT 100 PCT AND A 25 MM MEMBRANE FOR PARTICLES SMALLER THAN 0.3 MICRONS,PLATES ARE ALUMINUM,1.4 LITRES PER MIN. AIR FLOW,BATTERY PACK AND VACUUM PUMP |