Fast Qualitative Filter Paper 25-30 µm Whatman 114 Equivalent

Qualitative filter paper constructed from long-staple cotton fibres. Highest basis weight and thickness in the range—combined with a 25-30 µm pore size for fast flow rates. Suited to thick, viscous liquids and gelatinous precipitates.

Technical Specifications

• Type: Qualitative, fast flow rate
• Pore size: 25-30 µm
• Basis weight: 130 g/m²
• Thickness: 430 µm
• Max ash content: 0.06%
• Material: Long-staple cotton fibres
• Equivalent to: Whatman 114

Typical Applications

For filtration of thick and viscous liquids where flow rate takes priority over fine particle retention. Well suited to soil analysis and processes involving gelatinous precipitates.

Also used as a pre-filter in two-stage setups—retains coarse solids before passing the filtrate through a finer-grade paper.

Available Formats

• Circles: For use with glass and Büchner funnels
• Folded: Ready for direct placement in funnel—saves preparation time.

Compatibility and Substitution

Direct equivalent to Whatman 114. Drop-in replacement—no method changes required. Compatible with any protocol specifying Whatman 114.