Filtrerpapir
Filterpapir fremstillet af ren cellulose behandlet med saltsyre og flussyre er kvantitativt papir, der anvendes til filtrering med høj gennemstrømningshastighed og god tilbageholdelse. Det danner en semipermeabel barriere vinkelret på væske- eller luftstrømmen for at adskille fine stoffer fra væsker eller luft. Forskellige kvaliteter af filterpapir er tilgængelige til rutinemæssigt laboratoriearbejde, fra grov til fin filtrering af partikler.
Grade 114 qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin.
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Qualitative Filter Papers, Wet-Strengthened
Supplier: Sartorius
These qualitative filter papers are essentially used for analytical purposes and routine analyses, whenever no gravimetric analyses are required. They are wet-strengthened and can be used for pressure and vacuum filtration. They are made of refined pulp and linters with an >95% alpha-cellulose content, are very pure with an ash content <0,1%.
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Grade 0965 filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Coarse filter mat with high wet strength.
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Grade 2589 C filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Thick filter with medium to slow filtration speed, high wet strength, and good retention for smaller particles.
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Qualitative filter papers, standard grades, grade 593 ¹/₂, Whatman™
Supplier: Whatman products (Cytiva)
These cellulose filters are used in qualitative analytical techniques to determine and identify materials. A standard grade filter paper for fine precipitates.
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1PS faseseparationspapir, Whatman™
Supplier: Whatman products (Cytiva)
1PS phase-separating paper is a hydrophobic filter for routine solvent extraction. Within seconds it retains aqueous phases, while solvent phases flow through.
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Cellulose kromoatografipapir, Whatman™
Supplier: Whatman products (Cytiva)
Den udstrakte anvendelse af Whatman kromatografipapir over hele verden afspejler produkternes renhed, høje kvalitet og konsistens. Papirerne er fremstillet af særligt udvalgt cellulosebomuld under streng kvalitetskontrol til sikring af ensartethed.
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Quantitative filter papers, ashless grades, grade 589/1 and 589/1 ½, Whatman™
Supplier: Whatman products (Cytiva)
With less than 0,01% ash, Cytiva's Whatman Grade 589/1 filter papers can be used for the Blaine test in the cement industry and as an ash content test filter for foodstuffs.
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Grade 0860 ½ qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
Comparable to Grade 0858 but with a smooth surface, slightly thinner and faster.
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Kvalitativt filterpapir, klasse 230, Whatman™
Supplier: Whatman products (Cytiva)
A general qualitative filter with creped surface. Widely used in industrial laboratories and students laboratories for routine filtration.
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Cone folded filter papers, Whatman™
Supplier: Whatman products (Cytiva)
Cone folded filter paper saves valuable time when undertaking repetitive or multiple analyses.
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Grade 0903 filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Thin filter paper with smooth surface. Offers medium to slow flow rate and good retention for small particles.
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Grade 0905 filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
A creped paper for coarse particles, offers a very high filtration speed.
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Qualitative filter papers, wet strengthened grades, grade 1575, Whatman™
Supplier: Whatman products (Cytiva)
Slow cellulose filter papers with high wet strength. This grade has the same chemical resistance characteristics as Grade 1573.
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Qualitative filter papers, technical, smooth, grade C 140
Supplier: Sartorius
These smooth filter papers are made of refined pulp and linters with more than 95% alpha-cellulose content. The ash content of these filter papers is between 0,1 and 0,15%.
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Application specific filter papers, grade 3459, Whatman™
Supplier: Whatman products (Cytiva)
Creped cellulose filter papers with good retentivity at a relatively high filtration speed. They are used for the clarifying filtration of dried beet pulp extracts or beet juice after the addition of lead acetate for subsequent polarimetric sugar determination. They are specifically designed for the Venema unit (lead acetate method).



