Air Sampling Filters - EPM2000
EPM 2000 has been developed especially for use in high volume PM-10 air sampling equipment that collects atmospheric particulates and aerosols. It is manufactured from 100% pure borosilicate glass of special purity enabling detailed chemical analysis of trace pollutants to take place with the minimum of interference or background.
Whatman EPM 2000 was selected by the EPA to be the standard filter for use in the nationwide network of HiVol air samplers. Sheets are individually numbered to facilitate identification.
Quartz Filters – QM-A
High-purity quartz (SiO2) microfiber filters are used for air sampling in acidic gases, stacks, flues and aerosols, particularly at high temperatures up to 500° C and in PM-10 testing. Because of the low level of alkaline earth metals, ‘artifact’ products of sulfates and nitrates (from SO2 and NO2) are virtually eliminated. QM-A, sequentially numbered according to EPA standards, is suitable for most applications.
PM 2.5 Air Monitoring Membranes - Please refer to the section on PM2.5
| Typical Properties - Binder-Free Glass Microfiber Grades |
| Grade |
Description |
Particle
Retention
in Liquid (µm) |
Air Flow (s/100
mL/in²) |
Typical
Thickness
(µm) |
Basis
Weight
(g/m²) |
| QM-A |
Quartz |
2.2* |
6.4 |
450 |
85 |
| EPM 2000 |
Pure Borosilicate Glass |
2.0* |
4.7 |
450 |
85 |
*Particle Retention Rating at 98% efficiency