PM2.5 Monitoring PTFE Membrane (CAT#: STEM-BC-0066-ZJF)

PM2.5 monitoring PTFE membranes are designed for gravimetric monitoring of airborne particulate matter. The membrane is made from high-purity PTFE without binders or additives to reduce background interference. It is thin, lightweight, and provides high particle retention efficiency. The PTFE membrane is fixed in a chemically inert polypropylene support ring to maintain flatness for automated handling. Each membrane is individually coded for traceability. Barcode or QR code marking can be applied according to user requirements. The product is designed to support sensitive and interference-free analytical results. It is manufactured for use with PM10 and PM2.5 monitoring methods listed in the provided standards.

Membrane material: PTFE
Membrane thickness: 40±10 μm
Diameter options: 46.2±0.2 mm, 47 mm
Pore size: 2.0 μm
Membrane weight: 165.37±0.01 mg
Support ring material: Polypropylene
Particle retention:>99.995%
Pressure drop at 0.3 μm and 16.67 L/min: <30 cm H2O
Alkalinity: 25 μeq/g
Temperature-related weight stability: <20 μg
Drop-test weight stability: <20 μg
Maximum moisture absorption: <10 μg

High-purity PTFE membrane
Binder-free and additive-free
Low background interference
High particle retention efficiency
Polypropylene support ring
Flat membrane for automated handling
Individually coded for traceability
Supports PM2.5 gravimetric monitoring

STEM-BC-0039-ZJF
STEM-BC-0040-ZJF
STEM-BC-0065-ZJF
STEM-BC-0067-ZJF
STEM-BC-0070-ZJF