Filterpapiere
Filterpapier aus reiner Cellulose, behandelt mit Salzsäure und Flusssäure, ist ein quantitatives Papier für Filtrationen mit hoher Durchflussrate und guter Rückhaltung. Es bildet eine semipermeable Barriere senkrecht zum Flüssigkeits- oder Luftstrom, um feine Substanzen von Flüssigkeiten oder Luft zu trennen. Für routinemäßige Laborarbeiten stehen verschiedene Filterpapierqualitäten zur Verfügung, von grober bis feiner Partikelfiltration.
VWR®, Phasentrennpapier, Sorte 511
Supplier: VWR Collection
Hydrophobes Filterpapier für die Trennung wässriger und organischer Lösungen.
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VWR®, Filter mit niedrigem Stickstoffgehalt, Sorte 521
Supplier: VWR Collection
Filter mit niedrigem Stickstoffgehalt zur Bestimmung des Stickstoffgehalts in in Säure gelösten Stahl- und Eisenproben. Filtration von feinen Niederschlägen zum Auflösen nach der Kjeldahl-Methode.
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VWR®, Quantitative Filterpapiere
Supplier: VWR Collection
424: Für die Filtration von Blei-, Eisen- und Silbersulfid, Alkalicarbonat, Bleichromat, Arsen, Antimon, Cadmium und Lebensmitteln. Bestimmung des Sandgehalts in Milchprodukten. Bestimmung der Weiße in Papier und Zellstoff (Papierfabrik).
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Sorte 3 qualitative Filterpapiere, Standardsorten, Whatman™
Supplier: Whatman products (Cytiva)
Ein Filter der Standardsorte wird bei qualitativen Analysetechniken zur Materialbestimmung und -identifizierung verwendet. Zur Verwendung in Büchner-Trichtern.
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Grade 5 qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.
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Grade 602 h qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A standard grade filter esed in sample preparation, e.g., in the beverage industry for residual sugar determination, acidic spectra, refractometric analysis, and HPLC.
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Grade 520 a ½ qualitative filter papers, Whatman™
Supplier: Whatman products (Cytiva)
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).
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Grade 114V qualitative filter papers, fluted, Whatman™
Supplier: Whatman products (Cytiva)
Whatman Grade 114V smooth filter paper from Cytiva is wet-strengthened for high mechanical stability. Grade 114V fluted filters are suitable for recovery of large particles and gelatinous precipitates.
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Grade shark skin filter papers for technical use, Whatman™
Supplier: Whatman products (Cytiva)
Whatman Grade Shark Skin filter papers are a creped filter paper that is commonly used to remove impurities in a variety of applications.
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Qualitative filter papers, high-purity
Supplier: Sartorius
These paper grades are used for analytical purposes that require a low ash content. They are essentially used for qualitative analyses.
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Qualitative filter papers, grade 201, Whatman™
Supplier: Whatman products (Cytiva)
A general qualitative filter for less critical routine analysis. Widely used in industrial laboratories and students laboratories for routine filtration.
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Qualitative Filterpapiere, nassfeste Sorten, Sorte 1574 und 1574 ½, Whatman™
Supplier: Whatman products (Cytiva)
Mittelschnelles Zellulosefilterpapier mit hoher Nassfestigkeit. Dieses Papier ist genauso chemikalienbeständig wie Sorte 1573.
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Filterpapiere (Grad 8, Whatman™)
Supplier: Whatman products (Cytiva)
Diese weißen Baumwoll-Linter-Zellulosefilter eignen sich ideal für Routineuntersuchungen auf Fremdstoffe in verschiedenen Probenarten.
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Qualitative Filterpapiere, Standardsorten, Sorte 591, Whatman™
Supplier: Whatman products (Cytiva)
These cellulose filters are used in qualitative analytical techniques to determine and identify materials.
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Qualitative filter papers, technical, smooth, grade 3 m/N
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%. They are used for routine analyses like clarification, determination of substances, but also as discs with a centre hole for technical applications. Grades with a wet burst resistance >30 kPa are referred to as wet-strengthened and are therefore suitable for pressure or vacuum filtration.
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Application specific filter papers, grade 287 ½, Whatman™
Supplier: Whatman products (Cytiva)
Kieselguhr paper with a medium to slow flow rate. Additional adsorption effect, e.g., for the separation of very fine semi-colloidal turbidity, for clarifying milk serum, starch solutions, soil suspensions or sugar-containing solutions prior to polarimetry or refractometry.
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