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[Membrane] Air Sampling Filters and Quartz Filters
관리자 2021-10-26 17:15:16
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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
QM-H Quartz - - 430 85
EPM 2000 Pure Borosilicate Glass 2.0* 4.7 450 85

 

*Particle Retention Rating at 98% efficiency

Ordering Information - Air Sampling Filters and Quartz Filters
Catalog Number Description
Grade QM-A
1851-025 Grade QM-A Circles, 25 mm 100/pk
1851-032 Grade QM-A Circles, 32 mm 100/pk
1851-037 Grade QM-A Circles, 37 mm 25/pk
1851-047 Grade QM-A Circles, 47 mm 25/pk
1851-050 Grade QM-A Circles, 50 mm 100/pk
1851-055 Grade QM-A Circles, 55 mm 100/pk
1851-070 Grade QM-A Circles, 70 mm 100/pk
1851-082 Grade QM-A Circles, 82 mm 100/pk
1851-085 Grade QM-A Circles, 85 mm 100/pk
1851-090 Grade QM-A Circles, 90 mm 100/pk
1851-101 Grade QM-A Circles, 101.6 mm 100/pk
1851-110 Grade QM-A Circles, 110 mm 100/pk
1851-118 Grade QM-A Circles, 118 mm 100/pk
1851-150 Grade QM-A Circles, 150 mm 100/pk
1851-865 Grade QM-A Sheets, 8 x 10 inches 25/pk
1851-8866 Grade QM-A Circles, 8 x 10 inches Numbered 100/pk
GRADE QM-H
1853-037 Grade QM-H Circles, 37 mm 25/pk
1853-047 Grade QM-H Circles, 47 mm 25/pk
1853-050 Grade QM-H Circles, 50 mm 25/pk
1853-150 Grade QM-H Circles, 50 mm 25/pk
Grade EPM 2000
1882-047 Grade EPM 2000 Circles, 47 mm 100/pk
1882-866 Grade EPM 2000 Sheets, 8 x 10 inches 100/pk
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