GVS Life Sciences PM 2.5 PTFE Membrane is a high-purity, thin membrane for PM 2.5 ambient air monitoring. Each membrane is sequentially numbered with a chemically resistant polypropylene support ring. The low tare mass allows for accurate gravimetric determinations. No glues or adhesives are used in making the membranes and its stable design eliminates curling, keeping the membrane flat allowing for robot use.
Filter thickness: 40 m
Filter diameter: 46.2mm
Filter pore size: 2.0 m
Support ring media: Polypropylene
Total support ring thickness: 0.38mm
Support ring width: 3.68mm
Particle retention (0.3 m): 99.7%
Pressure drop (0.3 m) @16.67 l/min: 30cm water
Alkalinity: < 25 eq/g of filter
Temperature weight loss stability: < 20 g
Drop test weight loss stability: < 20 g
Moisture weight gain stability: < 10 g