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173 results for Carta da filtro

 

Carta da filtro

Made of pure cellulose treated with hydrochloric and hydrofluoric acid, filter papers are used for straining with good retention and flow rates. These cellulose filters create a semi-permeable barrier perpendicular to a liquid or airflow in order to separate fine substances from liquids or air. Different grades of filter paper are available for performing various laboratory applications including routine lab work, ranging from coarse to fine filtration of particulates. VWR offers a wide range of qualitative and quantitative filter papers with varying pore size, particle retention, flow rate and filtration times.

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Filter paper for breweries

Filter paper for breweries

Supplier: MACHEREY-NAGEL

Filter papers used in beverage industries. Available in plain and folded form.

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Ashless hardened quantitative filter paper

Ashless hardened quantitative filter paper

Supplier: Ahlstrom-Munksjö

Ahlstrom-Munksjö manufactures a series of extremely high purity, acid washed filter papers designed for use in analytical and gravimetric analysis. The quantitative grades are manufactured from top quality cotton linters using ultra-pure, deionised water and are further treated with dilute acid to remove any remaining organic and inorganic impurities. All quantitative grades are manufactured in a strictly controlled environment that ensures high uniformity and high purity from filter to filter.

Expand 95 Items
 
Soil analysis filter papers, phosphate-free

Soil analysis filter papers, phosphate-free

Supplier: MACHEREY-NAGEL

Phosphate-free smooth filter papers for soil analysis.

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High purity qualitative filter paper

High purity qualitative filter paper

Supplier: Ahlstrom-Munksjö

These qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers cover a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions.

Expand 52 Items
 
High purity qualitative filter paper

High purity qualitative filter paper

Supplier: Ahlstrom-Munksjö

Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions.

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Qualitative filter papers, grade MN 612 1/4

Qualitative filter papers, grade MN 612 1/4

Supplier: MACHEREY-NAGEL

Embossed filter papers particularly suited for general laboratory applications.

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Qualitative filter papers, technical, smooth, grade MN 713

Supplier: MACHEREY-NAGEL

Smooth filter papers particularly suited for technical applications such as industrial filtrations.

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Filter paper discs for Buchner table-top funnels, SP Bel-Art

Filter paper discs for Buchner table-top funnels, SP Bel-Art

Supplier: Bel-Art Products, a Part of SP

These heavy bond grade filter paper discs are custom-sized to fit table-top Buchner funnels and have a thickness of 0,30 mm.

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General purpose qualitative filter papers

General purpose qualitative filter papers

Supplier: Ahlstrom-Munksjö

Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications.

Expand 119 Items
 
Kieselguhr filter papers

Kieselguhr filter papers

Supplier: MACHEREY-NAGEL

This filter paper retains very fine turbidities and is e.g. recommended for the clarification of urines or sugar solutions.

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Activated charcoal filter papers, grade MN 728

Activated charcoal filter papers, grade MN 728

Supplier: MACHEREY-NAGEL

The activated charcoal filter paper MN 728 is particularly suited for the clarification and decolouring of solutions. The activated charcoal is incorporated in the paper and cannot be washed out into the filtrate.

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Application specific filter papers, Fritware®, SP Bel-Art

Application specific filter papers, Fritware®, SP Bel-Art

Supplier: Bel-Art Products, a Part of SP

These HDPE sheets can be cut, sawed, formed, machined and welded to fabricate special items.

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Qualitative filter papers, grades MN 616 md and 616 md 1/4, circles and folded filters

Qualitative filter papers, grades MN 616 md and 616 md 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 616 md is slightly more retentive than MN 615 with a corresponding increase in filtration time.

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Qualitative filter paper, standard grades MN 615 and 615 1/4, circles, sheets and folded filters

Qualitative filter paper, standard grades MN 615 and 615 1/4, circles, sheets and folded filters

Supplier: MACHEREY-NAGEL

MN 615 is the most widely used general purpose filter paper with medium retention and flow rate. This filter paper covers a wide range of laboratory applications and is frequently used for clarifying liquids.

Expand 36 Items
 
Qualitative filter paper, grades MN 619 eh and 619 eh 1/4, circles and folded filters

Qualitative filter paper, grades MN 619 eh and 619 eh 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 619 eh is slightly more dense than MN 619 with high particle retention and slow flow rate.

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Qualitative filter papers, grades MN 619 and 619 1/4, circles and folded filters

Qualitative filter papers, grades MN 619 and 619 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 619 is a dense filter paper with very high particle retention and slow flow rate. Excellent clarifying capacity for cloudy suspensions and for water and soil analysis.

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Black filter paper for the detection of light precipitates, grade MN 220

Black filter paper for the detection of light precipitates, grade MN 220

Supplier: MACHEREY-NAGEL

This filter paper, which is dyed black with a sulphur dye, is used to identify small quantities of light precipitates. For example, it is used for the detection of fluorine or silicon.

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Qualitative filter papers, grades MN 616 and 616 1/4, circles and folded filters

Qualitative filter papers, grades MN 616 and 616 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 616 is a filter paper with medium retention and flow rate. This filter paper covers a wide range of filtration applications.

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Qualitative filter papers, grades MN 617 and 617 1/4, circles and folded filters

Qualitative filter papers, grades MN 617 and 617 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 617 is a fast filter paper with excellent retention of coarse particles and gelatinous precipitates. This soft filter paper is used for example in routine clean up of biological or organic solutions.

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Qualitative filter papers, grades MN 618 and 618 1/4, circles and folded filters

Qualitative filter papers, grades MN 618 and 618 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 618 is a thick filter paper with medium flow rates and finer retention. It's higher loading capacity than thinner papers makes it especially useful for the filtration of large quantities of liquids.

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Qualitative filter paper, grades MN 617 we and 617 we 1/4, circles and folded filters

Qualitative filter paper, grades MN 617 we and 617 we 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 640 we is the fastest quantitative filter paper with highest flow rate for general laboratory filtration. It is used for example in analytical procedures of samples with coarse or gelatinous particles.

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Hardened qualitative filter papers, standard grades, MN 1670, MN 1672 and MN 1674

Hardened qualitative filter papers, standard grades, MN 1670, MN 1672 and MN 1674

Supplier: MACHEREY-NAGEL

Wet-strengthened analytical filter papers are made of refined pulp and linters and feature a content of α-cellulose of more than 95%. The smooth surface of these papers allows fibre-free filtration.

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High purity hardened qualitative filter paper

High purity hardened qualitative filter paper

Supplier: Ahlstrom-Munksjö

Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions. High Purity hardened filter papers grades 1288 to 1291 are also produced from cellulose with an alpha content of nearly 100% resulting in an ash content of <0,1%.

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Quantitative filter papers, ashless grades, MN 640

Quantitative filter papers, ashless grades, MN 640

Supplier: MACHEREY-NAGEL

These quantitative filter papers are made from refined pulp and linters. They are purified in a highly developed clean-up process to remove organic and inorganic impurities. This ensures a low ash content of <0,01 %. They are consistent performance and give safe results in gravimetric analyses.

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Qualitative filter papers, grade MN 617 wa

Supplier: MACHEREY-NAGEL

These papers are made hydrophobic (impermeable to water) by impregnation with a silicone. With the aid of these filters, water can be separated from water-immiscible organic solvents in an elegant manner, by means of a simple filtration.

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Qualitative filter papers, grades MN 619 de and 619 de 1/4, circles and folded filters

Qualitative filter papers, grades MN 619 de and 619 de 1/4, circles and folded filters

Supplier: MACHEREY-NAGEL

MN 619 de is an extra dense filter paper for excellent clarification of cloudy suspensions. Maximum retention capacity in qualitative range for fine particle filtration e.g. in chemical analysis.

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Hardened quantitative filter papers, ashless wet-strengthened grades, MN 1640

Hardened quantitative filter papers, ashless wet-strengthened grades, MN 1640

Supplier: MACHEREY-NAGEL

These wet strengthened hard smooth filter papers are made of refined pulp and linters and have a low ash content. They are often used for quantitative routine procedures and for analytical gravimetric applications.

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Filter paper, folded, Assistent®

Filter paper, folded, Assistent®

Supplier: GLASWARENFABRIK KARL HECHT

Smooth and medium fast filter papers, suitable for the analysis of fats (due to low ether-soluble residue).

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Filter papers, medium fast and fast

Filter papers, medium fast and fast

Supplier: GLASWARENFABRIK KARL HECHT

Folded filter papers are suitable for the analysis of fats (due to low ether-soluble residue).

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Phase separating paper

Phase separating paper

Supplier: MACHEREY-NAGEL

These papers are made hydrophobic (impermeable to water) by impregnation with a silicone. With the aid of these filters, water can be separated from water-immiscible organic solvents in an elegant manner, by means of a simple filtration.

Expand 22 Items
 
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