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Whatman® glass microfiber filters, Grade 934-AH®

circles, diam. 47 mm

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Z690805, glass fiber filter papers, glass microfiber filters


borosilicate glass membrane


basis weight, 64 g/m2




pkg of 100 ea


Whatman 1827-047
Whatman Article No. 28418473 (US reference)


47 speed (filtration)


47 mm


435 μm

pore size

1.5 μm retention

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General description

The fine particle retention of this popular grade is superior for its high retention efficiency at high flow rates and its high loading capacity. This is a smooth surface, high-retention borosilicate glass microfiber filter which withstands temperatures over 500°C.

Used for determining total suspended solids in water, removal of turbidity, and filtration of bacterial cultures. Grade 934-AH is used for a wide range of laboratory applications. It is recommended for water pollution monitoring, cell harvesting, liquid scintillation counting, and air pollution monitoring.

Features and benefits:
  • Excellent fine particle retention: allows high particle retention efficiency when filtering large volumes
  • Binder-free, high-grade borosilicate glass microfiber: enables use with temperatures up to 550ºC
  • Available in a wide range of sizes: in circle and sheet formats
  • High loading capacity: capable of processing very turbid streams
  • Low fiber shedding: improves quality assurance of test results

  • Water pollution monitoring
  • Air pollution monitoring
  • Cell harvesting
  • Liquid scintillation counting

Other Notes

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

Legal Information

934-AH is a registered trademark of Cytiva
Whatman is a registered trademark of Cytiva

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