WHA1004240
Whatman® qualitative filter paper, Grade 4
circles, diam. 240 mm, pack of 100
Sign Into View Organizational & Contract Pricing
All Photos(1)
Synonym(s):
Whatman filter, Whatman filters, Whatman paper, Z240591, filter paper, filter papers, paper filter
UNSPSC Code:
41104900
NACRES:
NB.24
Recommended Products
material
cellulose filters
circles
packaging
pack of 100
manufacturer/tradename
Whatman 1004-240
Whatman Article No. 28414017 (US reference)
parameter
0.22 psi wet burst
37 sec/100 mL speed (Herzberg)
diam.
240 mm
thickness
205 μm
ash
≤0.06%
pore size
20-25 μm (Particle retention)
basis weight
92 g/m2
Looking for similar products? Visit Product Comparison Guide
Related Categories
General description
These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
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.
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
Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.
Legal Information
Whatman is a registered trademark of Cytiva
Regulatory Information
新产品
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service