Papéis de Filtro

Supplier: VWR Collection

Papel de filtro hidrófobo usado para a separação de soluções aquosas e soluções orgânicas.

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.

Supplier: VWR Collection

424: Filtração de sulfureto de chumbo, sulfureto de prata, cromato alcalino, cromato de chumbo e arsénio, antimónio, cádmio e produtos alimentares. Determinação do índice de areia em lacticínios. Determinação do índice de brancura na pasta de papel em fábricas de papel.

Supplier: Whatman products (Cytiva)

A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.

Supplier: Whatman products (Cytiva)

A standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.

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.

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).

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.

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.

Supplier: Sartorius

These paper grades are used for analytical purposes that require a low ash content. They are essentially used for qualitative analyses.

Supplier: Whatman products (Cytiva)

A general qualitative filter for less critical routine analysis. Widely used in industrial laboratories and students laboratories for routine filtration.

Supplier: Whatman products (Cytiva)

Medium fast cellulose filter paper with high wet strength. This paper has the same chemical resistance characteristics as Grade 1573.

Supplier: Whatman products (Cytiva)

These white cotton linter cellulose filters are ideal for routine investigations of foreign substances in a variety of sample types.

Supplier: Whatman products (Cytiva)

These cellulose filters are used in qualitative analytical techniques to determine and identify materials.

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.

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.