Whatman™ Qualitative Filter Papers: Grade 4 Roll

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

Brand: Whatman™

Manufacturer Part Number: 1004-648

GRADE 4 REEL 1.5X4.5' D=63MM

UNSPSC: 41120000

Code: A0

Additional Details:
Additional Details: Weight: 0.11000kg

Product Code. 11310454

Quantity Price
1 £ 28.25 / Each
Estimated Shipment
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Description and Specification


Quantity 1Roll
Width (Metric) 38mm
Particle Retention Coarse particles and gelatinous precipitates
Flow Rate Fast
Format Roll
Length (Metric) 114mm
Thickness (Metric) 210μm
Dimensions (L x W) 114 x 38mm
Pore Size (Metric) 20 to 25μm
Grade 4


These cellulose filters are used in qualitative analytical techniques to determine and identify materials and for clarfying 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