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WHA1851025

Whatman® QM-A quartz filters

Circles, 25 mm 100/pk

Synonym(s):

Z741027, glass fiber filters, quartz fiber filters

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About This Item

UNSPSC Code:
40161507
NACRES:
NB.24

material

circles
quartz membrane

sterility

non-sterile

packaging

pack of 100

manufacturer/tradename

Whatman 1851-025
Whatman Article No. 28418504 (US reference)
Whatman Article No. 28418537 (US reference)

diam.

25 mm

pore size

2.2 μm

suitability

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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