GN-4 Metricel® is a mixed
cellulose esters membrane well suited for monitoring metal and asbestos
levels.It meets all NIOSH requirements
for performing Methods 7400 and 7402.It
is available in a 0.8 micron pore size, with diameters ranging from 25-47 mm.The 25 and 37 mm discs are also available
preloaded in Air Monitoring Cassettes.Flow rate: 145 mls. /min.
