Whatman™ Qualitative Filter Paper: Grade 4 Circles

Filters and retains course 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.

Overview
Brand: Whatman™

Manufacturer Part Number: 1004-240

UNSPSC: 41104929

Code: 69

Additional Details:
Additional Details: Weight: 1.00000kg



Product Code. 11322855

Quantity Price
1 £ 69.45 / Pack of 100
10 £ 55.56 / Pack of 100
In Stock 21
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  • Description and Specification
  • Alternative Products
  • Documentation
Description and Specification

Specification

Porosity Medium
Quantity 100Pack
Flow Rate Fast
Particle Retention Coarse particles and gelatinous precipitates
Thickness (Metric) 210μm
Pore Size (Metric) 20 to 25μm
Material Cellulose
Diameter (Metric) 240mm
Format Circle
Grade 4

 

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

Alternative Products
Documentation