Grade 52 Filter for Quantitative Analysis, General

GE’s Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.

• Manufactured from high-quality cotton linters and treated to remove trace metals
• High wet-strength and chemical resistance
• Nominal particle retention of 7 µm
• Medium flow rate (Herzberg filtration speed 235 s)
• High purity (0.015% ash maximum)
• Compatible with Hirsch or Büchner funnel applications

Büchner funnel vacuum filtration

The quality of analysis resulting from vacuum filtration using a Hirsch or Büchner funnel relies on using a high-quality filter that avoids introducing artifacts into measurement. GE’s Grade 52 hardened filter paper is acid-treated to prevent fiber shredding during vacuum filtration or precipitate collection.

Grade 52: 7 µm

Specifications:

• Grade: Grade 52
• Format: Circles
• Type: Hardened low ash
• Typical Particle Retention in Liquid: 7 µm
• Typical Water Flow Rate (ml/min) for 9cm diameter: 66
• Nominal Thickness: 175 µm
• Nominal Basis Weight: 96g/m²
• Nominal Air Flow Rate: 15s/100mL/in²
• Nominal Ash Content: 0.015%
• Material: High-quality cotton linters
• Alpha Cellulose Content Min.: ≥98%

Ordering Information: