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Whatman® QM-A quartz filters

circles, diam. 118 mm

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quartz membrane


pk of 100


Whatman 1851-118
Whatman Article No. 28418551 (US reference)


118 mm

pore size

2.2 μm


suitable for (air sampling in acidic gases, stacks, flues and aerosols)

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General description

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.

  • Grade: QM-A
  • Description: Quartz
  • Particle Retention in Liquid (μm): 2.2
  • Air Flow (s/100 mL/in²): 6.4
  • Typical Thickness (μm): 450
  • Basis Weight (g/m²): 85

Other Notes

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Legal Information

Whatman is a registered trademark of Cytiva

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