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: 1004-270

X100 FILTER PAPER GR 4 270MM

UNSPSC: 41120000

Code: A0

Additional Details:
Additional Details: Weight: 0.65000kg



Product Code. 11360444

Quantity Price
1 £ 64.3 / Pack of 100
Estimated Shipment
20-12-2016
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Description and Specification

Specification

Quantity 100Pack
Diameter (Metric) 270mm
Grade 4
Material Cellulose
Thickness (Metric) 210μm
Pore Size (Metric) 20 to 25μm
Porosity Medium
Particle Retention Coarse particles and gelatinous precipitates
Flow Rate Fast
Format Circle

 

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