Whatman® QM-A quartz filters

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. 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.

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WHA1851037 Whatman® QM-A quartz filters Circles, 37 mm 100/pk
WHA1851047 Whatman® QM-A quartz filters Circles, 47 mm 100/pk
WHA1851090 Whatman® QM-A quartz filters Circles, 90 mm 100/pk
WHA1851150 Whatman® QM-A quartz filters Circles, 150 mm 100/pk
WHA1851101 Whatman® QM-A quartz filters Circles, diam. 101.6 mm
WHA1851032 Whatman® QM-A quartz filters circles, diam. 32 mm
WHA1851055 Whatman® QM-A quartz filters circles, diam. 550 mm
WHA1851865 Whatman® QM-A quartz filters Sheets, 8 x 10 inches 25/pk
WHA1851025 Whatman® QM-A quartz filters Circles, 25 mm 100/pk
Z741043 Whatman® QM-A quartz filters Circles, 50 mm 100/pk
WHA1851050 Whatman® QM-A quartz filters Circles, 50 mm 100/pk
WHA18518866 Whatman® QM-A quartz filters Circles, 8 x 10 inches Numbered 100/pk
WHA1851110 Whatman® QM-A quartz filters Circles, 110 mm 100/pk
WHA1851118 Whatman® QM-A quartz filters circles, diam. 118 mm
WHA1851085 Whatman® QM-A quartz filters circles, diam. 85 mm
WHA1851082 Whatman® QM-A quartz filters circles, diam. 82 mm
WHA185303750 Whatman® quartz filter, Grade QM-H circles, diam. 37 mm, pack of 50
WHA185305050 Whatman® quartz filter, Grade QM-H circles, diam. 50 mm, pack of 50
WHA185309050 Whatman® quartz filter, Grade QM-H circles, diam. 90 mm, pack of 50
WHA185304750 Whatman® quartz filter, Grade QM-H circles, diam. 47 mm, pack of 50
WHA185315050 Whatman® quartz filter, Grade QM-H circles, diam. 150 mm, pack of 50
WHA1852042 Whatman® quartz filter, Grade QM-B, 42 mm