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Cytiva Whatman™ Qualitative Filter Paper: Grade 4 Circles

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

Brand:  Cytiva 1004-400

Code : A0

Additional Details : Weight : 1.44000kg

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Product Code. 11380444

  • £187.00 / Pack of 100
Estimated Shipment: 22-04-2024
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Description

Description

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

 

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
Specifications

Specifications

Grade 4 Qualitative Filter Paper Standard Grade, circle, 400 mm
Cellulose
20 to 25 μm
Fast
Grade 4
100 Pack
Ø 400 mm
Disc
Coarse particles and gelatinous precipitates
37 sec.
A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
Medium
210 μm
400 mm
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