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Whatman™ Qualitative Filter Papers: Grade 4 Sheets

Filters and retains course particles for monitoring air pollution. Whatman™ Qualitative Filter Papers: Grade 4 Sheets are used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Manufacturer:  Whatman™ 1004917

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Catalog No. 09-825P


 

Specifications

Description

Paper, Filter; Whatman; Qualitative; Circles and sheets; Grade 4; Retains coarse particles; Gelatinous precipitates; Particle retention: 20-25μm; Surface: Smooth; Coarse; Filtration speed: Herzberg, 37 seconds; 460 x 570mm dia.

 

These cellulose filters are used in qualitative analytical techniques to determine and identify materials and for clarifying liquids. 
  • Particle Retention: 25μm
  • Porosity: Coarse
  • Filtration speed: Herzberg, 37 sec.
  • Surface: smooth
  • Extremely fast filtering  with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide
  • Useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis
Description & Specifications

Specifications

100Pack
570mm
210μm
Coarse particles and gelatinous precipitates
Sheet
4
460mm
20 to 25μm
Fast
570 x 460mm
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