Papiers filtre
Fabriqué à partir de cellulose pure traitée à l’acide chlorhydrique et à l’acide fluorhydrique, le papier filtre est un papier quantitatif utilisé pour la filtration avec des débits élevés et une bonne rétention. Il crée une barrière semi-perméable perpendiculaire au flux de liquide ou d’air afin de séparer les substances fines des liquides ou de l’air. Différentes qualités de papier filtre sont disponibles pour les travaux de laboratoire courants, allant de la filtration grossière à la filtration fine des particules.
VWR®, Papier séparateur de phases, grade 511
Supplier: VWR Collection
Papier filtre hydrophobe utilisé pour la séparation entre les solutions aqueuses et les solutions organiques.
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VWR® Low Nitrogen Content Filters, Grade 521
Supplier: VWR Collection
Low nitrogen content filters for determination of nitrogen content in steel and iron samples dissolved in acid. Filtration of fine precipitates to dissolve according Kjeldahl method.
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VWR®, Papiers filtre quantitatifs
Supplier: VWR Collection
424 : Filtration of lead sulphide, iron sulphide, silver sulphide, alkali carbonate, lead chromate, arsenic, antimony, cadmium and foodstuffs. Détermination de la teneur en sable des produits laitiers. Détermination de la blancheur de la pâte à papier dans les papeteries.
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VWR®, Papiers filtre qualitatifs
Supplier: VWR Collection
These highly pure filter paper grades are produced from cellulose fibers with an alpha-cellulose content of nearly 100%, in accordance with precise quality standards. The ash content is approximately 0.06%.
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Papiers filtre qualitatifs, grades standard, grade 3, Whatman™
Supplier: Whatman products (Cytiva)
Filtre en cellulose de grade standard utilisé dans les techniques d'analyse qualitative pour la détermination et l'identification de matériaux. Deux fois plus épais que le grade 1. L'épaisseur renforcée améliore sa résistance à l'humidité et rend ce grade parfaitement adapté à une utilisation dans les entonnoirs Büchner. Ce pouvoir hautement absorbant est particulièrement utile lorsque le papier est utilisé comme portoir à échantillons.
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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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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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Papiers filtres lignés grade 8, Whatman™
Supplier: Whatman products (Cytiva)
These white cotton linter cellulose filters are ideal for routine investigations of foreign substances in a variety of sample types.
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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, wet strengthened grades, grade 1574 and 1574 ½, Whatman™
Supplier: Whatman products (Cytiva)
Medium fast cellulose filter paper with high wet strength. This paper has the same chemical resistance characteristics as Grade 1573.
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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, standard grades, grade 597L, Whatman™
Supplier: Whatman products (Cytiva)
These are cellulose qualitative filter papers with low fat content.
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Papiers filtre qualitatifs, grades standard, grade 591, Whatman™
Supplier: Whatman products (Cytiva)
These cellulose filters are used in qualitative analytical techniques to determine and identify materials.
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#: 20864.320
Fournisseur: VWR Chemicals
#: 83640.320
Fournisseur: VWR Chemicals
#: 31770.294
Fournisseur: VWR Chemicals
#: 1.00030.2500
Fournisseur: Merck
#: 83645.320
Fournisseur: VWR Chemicals