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Whatman™ Environmental Monitoring Filters

By Whatman/Cytiva

For PM 2.5 ambient air monitoring

Whatman™ Environmental Monitoring Filters

A new, high purity, thin PTFE membrane in a sequentially numbered chemical resistant polypropylene support ring. These filters are manufactured under the requirements of 40 CFR Part 50, Appendix L. Whatman certifies that the required number of filters (0.1 percent or 10, whichever is greater) from each lot offered for sale have been tested as specified for the following tests and meet each of the design and performance specifications. These include trace metal analysis by XRF and visual inspection for defects such as pinholes, support ring separation, chaff or flashing, loose material, discoloration, filter nonuniformity and any other obvious filter defect. Whatman hereby states that each manufacturing lot that is offered for sale, and is identified for use with the PM 2.5 or TSP reference methods, conforms to EPA acceptance criteria.


Filter Medium PTFE
Filter Thickness 40µm
Filter Diameter 46.2mm
Filter Pore Size 2µm
Support Ring Media Polypropylene
Total Support Ring Thickness 0.38mm
Particle Retention (0.3µm) 99.7%
Pressure Drop (0.3µm) @ 16.67 liters/min. 30cm H20
Alkalinity <25µeq/g of filter
Temperature Wt. Loss Stability <20µg
Drop Test Wt. Loss Stability <20µg
Moisture Wt. Gain Stability <10µg

Cat.No.NameDiamPK Seal Color
15-7592-104 PM2.5 Air Monitoring Membrane Filters 46.2mm $767.38
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