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Whatman™ Quantitative Filter Paper: Grade 50 Circles

Enables strong retention for very fine crystalline precipitates. Whatman™ Quantitative Filter Paper: Grade 50 Circles withstand shredding, wet handling, and precipitate removal by scraping.

Manufacturer: whatman™  1450320

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Catalog No. 09-865L

  • / Pack of 100 Each

Description & Specifications


Type Hardened low ash
Quantity 100Pack
Grade 50
Material High-quality Cotton Linters
Pore Size (Metric) 2.7μm
Format Circle
Thickness (Metric) 115μm
Porosity Fine
Diameter (Metric) 320mm
Flow Rate Slow

Highly glazed, hardened filter paper

  • Thinner filter design (average thickness 115 µm) than most Büchner filter papers
  • Acid-treated for high wet-strength and chemical resistance
  • Nominal particle retention of 2.7 µm
  • Slow flow rates (Herzberg filtration speed 2685 s)
  • High purity and low ash content (0.015% ash maximum)
  • Compatible with Hirsch or Büchner funnels