WHA1004125
Whatman® qualitative filter paper, Grade 4
circles, diam. 125 mm, pack of 100
Synonym(s):
Whatman filter, Whatman filters, Whatman paper, Z240567, filter paper, filter papers, paper filter
About This Item
Recommended Products
material
cellulose filters
circles
packaging
pack of 100
manufacturer/tradename
Whatman 1004-125
Whatman Article No. 28414014 (US reference)
parameter
0.22 psi wet burst
37 sec/100 mL speed (Herzberg)
diam.
125 mm
thickness
205 μm
ash
≤0.06%
pore size
20-25 μm (Particle retention)
basis weight
92 g/m2
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General description
Grade 4: 20-25 μm, (very fast filter paper)
Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Very useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis. Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
Other Notes
Legal Information
Certificates of Analysis (COA)
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