PM2.5 Air Monitoring and Sampling Filter Membrane

Cobetter PM 2.5 air monitoring and sampling membrane is an ideal, accurate, certified product for your air analysis. It conforms to US EPA 40CFR Part 50 (EPA 1997a) standard.


Better Handling

The thin PTFE membrane is fixed by polypropylene / PFA support ring. This construction provide higher membrane strength and thermal stability, avoid curling during the operation.


Accurate Result

Cobetter PM 2.5 membrane is manufactured in 10-thousand-grade clean room. Eliminates the particle contamination from the workshop. The PM2.5 membrane has low chemical background, lot consistency and free of adhesives.


Certified Quality

X-Ray Fluoresence Trace Elements Analysis, 100% Visual Inspection


Technical Specifications

Cobetter PM 2.5 Air Monitoring Membrane

Filter Media

Un-supported ePTFE

Pore Size


Typical Filter Thickness

40 +/- 10µm

Filter Diameter

46.2 +/- 0.2mm

Typical Particle Retention(DOP 0.3µm)


Support Ring

Popypropylene / PFA (Heat Resistant)

Support Ring Thickness

0.38 +/- 0.04mm

Support Ring Width


Pressure Drop (0.3µm) @16.67L/min

<30cm H2O



Drop Test Wt. Loss Stability


Temperature Wt. Loss Stability


Moisture Wt. Gain Stability



Glassfiber Membrane for Air Monitoring and Sampling

Cobetter also supplies high through put glassfiber membranes for air monitoring and sampling in aggressive environments. Filtration efficiency >99.99%@0.3µm, Pressure Drop (0.3µm @16.67L/min) <30cm H2O.






Please contact [email protected] for receiving test samples.


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