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.
| Variation Codes | 1006-090 |
|---|
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Whatman
Qualitative Filter Papers-Grade 93: 10 μm
Grade 93: 10 μm*
This filter paper is intermediate in speed and retention between Grades 1 and 4.Available in a dispenser pack, which can be attached to the wall or bench, placed on a
shelf either upright or flat, and used as a normal carton or as a convenient dispenser.The envelopes are released individually for easy one-at-a-time removal.
Package and envelopes are clearly marked for size and content.
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Whatman
Quantitative Filter Papers-Grade 41: 20μm
Grade 41: 20 μm*
The fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates (e.g. iron or aluminum hydroxides).Also used in quantitative air pollution analysis as a paper tape for impregnation when
determining gaseous compounds at high flow rates.SKU: n/a -
Whatman
Qualitative Filter Papers-Grade 5: 2.5μm
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.
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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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