cellulose filters are used in qualitative analytical techniques to determine and identify materials.
Prepleated qualitative filters are available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
-25%
Whatman
Qualitative Filter Papers-Grade 5: 2.5μm
Availability:
10 in stock
Grade 5: 2.5 μm*
The maximum degree of fine particle filtration in the qualitative range.
Capable of retaining the fine precipitates encountered in chemical analysis.
Slow flow rate.
Excellent clarifying filter for cloudy suspensions and for water and soil analysis.
Also available prepleated as Grade 5V.
Rs.1,507.50 – Rs.5,092.50
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Qualitative Filter Papers – Grade 2: 8µm
Slightly more retentive than Grade 1 with a corresponding increase in filtration time (i.e., slightly slower filtration speed).
More absorbent than Grade 1. In addition to general filtration in the 8 μm particle size range, the extra absorbency is utilized, for example, to hold soil nutrient in plant growth trials.
Also used for monitoring specific contaminants in the atmosphere and in soil testing.
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Qualitative Filter Papers-Grade 3:6μm
Grade 3: 6 μm, (Medium flow, thick filter paper)
Double the thickness of Grade 1 with still finer particle retention and excellent loading capacity; more precipitate can be held without clogging.
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Quantitative Filter Papers-Grade Grade 50: 2.7μm
Grade 50: 2.7 μm*
Retention of very fine crystalline precipitates.The thinnest of all Whatman filter papers with a slow flow rate, these filters have a hardened and highly glazed surface, which also keeps the paper free from loose surface fibers.
Highly suitable for
qualitative or quantitative filtrations requiring vacuum assistance on Büchner
or 3-piece filter funnels.Very strong when wet and will withstand wet handling and
precipitate removal by scraping.In the electronics industry, the virtual absence of
fiber shedding is utilized in carriers for integrated circuits.This grade is also available in Smear Tab format for wipe testing (e.g. testing of
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