Whatman™ Ambient Air Monitoring Technical Note

Whatman QM-A filters are suitable for use in US EPA PM10  for ambient air monitoring applications. PM10 describes inhalable particles, with diameters that are generally 10 micrometers and smaller. Whatman EPM 2000 filters are suitable for use in US EPA TSP for ambient air monitoring. TSP refers to ‘Total Suspended Particles’.

Whatman QM-A: Filters for Use in US EPA PM10 Ambient Air Monitoring
 

Property Test Method Unit of Measure Value Range
Filter Media n/a n/a Quartz Fiber n/a
Filter Thickness ASTM D 645-92 mm 0.45 ± 15
Filter Dimension micrometer inches 8 x 10 ± 1/16
Particle Retention (0.3 μm) ASTM D 2986-91 % 99.95 minimum
Flow Rate EPA RFM M3/min 1.1325 ± 0.0285
Tensile Strength ASTM D 828-93 g/15 mm 200 minimum
Brittleness Test for Fiber Filters n/a No crack larger than 1 inch maximum
Integrity Test for Fiber Filters mg 2.5 maximum
Weight Loss EMSL/RTP-SOP- QAD-522 %/filter 0.75 maximum
Lead Content EPA RFM (40 CRF 50) μg/filter 0.25 maximum
Alkalinity EPA/S6e0c0ti/oRn- 924.1/0238b μeq/g of filter 25 maximum


Whatman EPM 2000: Filters for Use in US EPA TSP Ambient Air Monitoring
 

Property Test Method Unit of Measure Value Range
Filter Media n/a n/a Glass Fiber n/a
Filter Thickness ASTM D 645-92 mm 0.45 ± 15
Filter Dimension micrometer inches 8 x 10 ± 1/16
Particle Retention (0.3 μm) ASTM D 2986-91 % 99.95 minimum
Flow Rate EPA RFM M3/min 1.52 ± 0.18
Tensile Strength ASTM D 828-93 g/15 mm 500 minimum
Brittleness Test for Fiber Filters n/a No crack larger than 1 inch maximum
Integrity Test for Fiber Filters mg 2.5 maximum
Weight Loss EMSL/RTP-SOP- QAD-522 %/filter 0.75 maximum
Lead Content EPA RFM (40 CRF 50) μg/filter 0.25 maximum
Alkalinity EPA/S6e0c0ti/oRn- 924.1/0238b μeq/g of filter 25 maximum

 

Materials