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%
| Variation Codes | 1006-090 |
|---|
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Whatman
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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Whatman
Extraction Thimbles-HP Cellulose Extraction Thimbles
Cellulose extraction thimbles are produced from high-quality alpha cellulose cotton
linter and have excellent mechanical strength and retention.
Standard single thickness thimbles have a wall thickness of approximately 1 mm
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Whatman
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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Whatman
Glass Microfiber Filters-Binder Free Glass Microfiber Filters- Grade GF/A (1.6 μm)
Offers fine particle retention and high flow rate, as well as good loading capacity.
Used for high-efficiency general purpose laboratory filtration, including water pollution monitoring of effluents, for filtration of water, algae and bacteria cultures, food stuff analyses, protein filtration, and radioimmunoassay of weak ß emitters.
Recommended for gravimetric determination of airborne particulates, stack sampling, and absorption
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