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  5. Cytiva Whatman™ Qualitative Filter Paper: Grade 4 Circles

Cytiva Whatman™ Qualitative Filter Paper: Grade 4 Circles

Product Code. 11392845
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Diameter (Metric):
27 mm
41 mm
42.5 mm
47 mm
50 mm
55 mm
70 mm
90 mm
110 mm
125 mm
150 mm
185 mm
240 mm
270 mm
320 mm
400 mm
Unit Size:
Pack of 100
Pack of 400
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Product Code. Diameter (Metric) unitSize
11392845 125 mm Pack of 100
11370444 27 mm Pack of 400
12375813 41 mm Pack of 100
11342845 42.5 mm Pack of 100
11390444 47 mm Pack of 100
11300454 50 mm Pack of 100
11352845 55 mm Pack of 100
10598671 70 mm Pack of 100
11372845 90 mm Pack of 100
11382845 110 mm Pack of 100
10614941 150 mm Pack of 100
10419691 185 mm Pack of 100
11322855 240 mm Pack of 100
11360444 270 mm Pack of 100
11332855 320 mm Pack of 100
11380444 400 mm Pack of 100
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Product Code. 11392845 Supplier Cytiva Supplier No. 1004125
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38.76 GBP valid until 2026-04-30
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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
TRUSTED_SUSTAINABILITY

Specifications

Description Grade 4 Qualitative Filter Paper Standard Grade, circle, 125 mm
Format Disc
Material Cellulose
Particle Retention 25 μm
Pore Size 20 to 25 μm
Filtration Speed 37 sec.
Flow Rate Fast
For Use With (Application) A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
Grade Grade 4
Porosity Medium
Quantity 100 Pk.
Thickness (Metric) 210 μm
Type Qualitative Filter Paper
Diameter (English) 4.92 in.
Diameter (Metric) 125 mm
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