GE Whatman PM2.5 Air Monitoring Membrane Filters - Each

GEs Whatman PM2.5 PTFE membrane filters are designed for PM 2.5 ambient air monitoring. These high-purity, thin filters are sequentially numbered and come with chemically resistant polypropylene support rings, which eliminates curling and makes the filter robot-friendly. Thermally stable design eliminates curling, keeps the membrane flat, and makes the filter robot-friendly. Low tare mass for accurate gravimetric determinations. These air sampling filters comform to the PTFE Filters for EPA PM 2.5 Reference Method, under the requirements of 40 CFR Part 50, Appendix L.

• Used for PM 2.5 ambient air monitoring
• Do not contain glues or adhesives
• Sequentially numbered for easy traceability of the filter
• Retain a minimum of 99.7% of 0.3 m size particulates

Specifications:
• Alkalinity max.: 25 µeq/g of filter (Test Method: Section 2.12 EPA/600/R-94/038b)
• Material Polytetrafluoroethylene (PTFE)
• Particle Retention 0.3 mu m min.: 99.7%
• Pore Size: 2 µm
• Support Ring: Yes
• Support Ring Material: Polypropylene (PP)
• Support Ring Width: 3.68 mm +/- 0.00 to 0.51 (Test Method: template)
• Total Support Ring Thickness: 0.38 mm +/- 0.04
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