0.8 μm GN-4 Metricel™ membrane, a Pall Life Sciences product, has a low fiber background count. It is widely accepted for air monitoring of fibers, asbestos fibers, and metals.

Available unassembled for costeffective monitoring with a variety of membranes.
Leak proof and tamper proof. Banded cassettes ensure air-tight seal for critical applications

Materials of Construction
Filter Media: GN-4 Metricel membrane (mixed cellulose esters) with cellulose support pad
Housing: Carbon-filled polypropylene

Effective Filtration Area
3.85 cm2

Dimensions
Overall Length [Includes 5 cm (2 in.)

Extension: 7.9 cm (3.1 in.)
Diameter: 2.8 cm (1.1 in.)

Filter Size
25 mm

Inlet/Outlet Connections
Luer-type female inlet, female luer built-in hose adapter outlet

Operating Temperature
Ambient

Applications
GN-4 Metricel membrane meets fiber count and background requirements to comply with NIOSH Methods 7400 and 7402.

Cassettes can be used to monitor respirable constituents such as silica, metal, and dusts.

Filter Holders

Testing and Monitoring