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Whatman™ Binder-Free Glass Microfiber Filters, Grade 934-AH Circles

Designed for analysis of non-filterable residue and materials that require a high loading capacity glass microfiber filter. Whatman™ Binder-Free Glass Microfiber Filters, Grade 934-AH Circles are also used in cell harvesting, liquid scintillation, and monitoring pollution.

Manufacturer: whatman™  WHT1827320

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Catalog No. 09-870K

  • / Pack of 100 Each

Description & Specifications


Diameter (Metric) Outside 320mm
Product Type Circle; Dia.: 320mm
Weight (Metric) 64g/m2
Quantity 100Pack
Diameter (English) Outside 12.5 in.
Flow Rate 3.7 sec./100mL/in.2
Grade 934-AH
Surface Type Smooth
Thickness (Metric) 435μm
Material Borosilicate Glass
Format Circle
Temperature (English) Maximum 932°F
Filtration Time 47 sec./100mL
Temperature (Metric) Max 500°C
Thickness (English) 0.017 in.
Particle Retention 1.5μm

Grade 934-AH filters are often used in total suspended solids analysis.

  • Smooth surface for efficient precipitate recovery
  • Nominal particle retention of 1.5µm
  • Withstands temperatures up to 500°C
  • Fast filtration speed