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1 – 15 of 99 results
1
Promotions Available

Cytiva Whatman™ Qualitative Filter Paper: Grade 1 Circles

Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Circles are widely used standard grade filter papers for routine applications with medium retention and flow rates.

EDGE
Thickness (Metric) 180 μm
Flow Rate 57mL/min. (water)
Particle Retention >11 μm
Basis Weight 87 g/m2
Format Disc
Airflow Rate 13sec./100mL/sq. in.
Grade Grade 1
Material Cellulose
Porosity Medium
Filtration Speed 150 sec.
For Use With (Application) A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids.
2

Cytiva Whatman™ Qualitative Filter Paper: Grade 595 ½ Pleated Circles

Pleated to save time and achieve optimal fit in conical filter funnels. Whatman™ Qualitative Filter Paper: Grade 595 ½ Pleated Circles provide extra surface area to increase total loading capacity.

EDGE
Thickness (Metric) 150 μm
Pore Size 7 μm
Flow Rate Medium fast
Particle Retention 7 μm
Quantity 100 Pk.
Grade Grade 595 ½
Material Cellulose
Filtration Speed Approx. 80 s
For Use With (Application) A prepleated filter used for many routine analytical applications in different industries (e.g., particle separation from food extracts or filtration of solids from digested environmental samples, e.g., for ICP/AAS analysis).
3

Cytiva Whatman™ Qualitative Filter Paper: Grade 597½ Pleated Circles

Pleated to save time and achieve optimal fit in conical filter funnels. Whatman™ Qualitative Filter Paper: Grade 597½ Pleated Circles provide extra surface area to increase total loading capacity.

EDGE
Thickness (Metric) 180 μm
Pore Size 4 to 7 μm
Flow Rate Medium Fast
Particle Retention 7 μm
Format Pre-pleated Circle
Quantity 100 Pk.
Grade Grade 597 ½
Material Cellulose
Filtration Speed Approx. 70 s
For Use With (Application) A prepleated filter used for a wide variety of analytical routine applications in different industries like food testing (e.g., determination of fat content) or removal of carbon dioxide and turbidity from beverages (e.g., beer analysis).
4

Cytiva Whatman™ Kjeldahl Analysis Weighing Paper, Grade B-2

Dissolves residue-free in acid solution, which is critical in applications such as Kjeldahl analysis of nitrogen in soil. Whatman Kjeldahl Analysis Weighing Paper, Grade B-2 is thin, lightweight, and low in nitrogen for accurate chemical analysis.

EDGE
Thickness (Metric) 0.04 mm
Format Sheet
Quantity 500 Pk.
Grade B-2
Material Parchment Paper
5
Promotions Available

Sartorius™ Smooth Folded Filters, Grade 3-HW

Use for routine qualitative analyses in the lab. Sartorius™ Smooth Folded Filters, Grade 3-HW are wet-strengthened for use in pressure and vacuum filtration. Ultra-pure filter paper is available as a folded filter cone in a variety of diameters.

EDGE
Thickness (Metric) 0.14 mm
Particle Retention 8 to 12 μm
Type Qualitative Filter Paper
Format Folded
Quantity 100 Pk.
Grade 3HW
Material Cotton Linters, Refined Pulp
Filtration Speed 20μm/sec.
For Use With (Application) For qualitative-technical analyses, used for routine analyses like clarification, determination of substances, but also as discs with a center hole for technical applications
6

Cytiva Whatman™ Grade 602H Qualitative Filter Papers

Collects very small particles and removes fine precipitates. Whatman™ Grade 602H Qualitative Filter Papers are used in the beverage industry to determine residual sugar, acidic spectra, refractometric analysis and HPLC.

EDGE
Thickness (Metric) 160 μm
Flow Rate Slow
Particle Retention <2 μm
Format Disc
Quantity 100 Pk.
Grade Grade 602 h
Material Cellulose
Filtration Speed Approx. 375 s
For Use With (Application) A standard grade filter esed in sample preparation, e.g., in the beverage industry for residual sugar determination, acidic spectra, refractometric analysis, and HPLC.
7
Promotions Available

Cytiva Whatman™ Qualitative Filter Paper: Grade 4 Circles

Filters and retains coarse particles for monitoring air pollution. Whatman™ Qualitative Filter Paper: Grade 4 Circles are used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

EDGE
Thickness (Metric) 210 μm
Pore Size 20 to 25 μm
Flow Rate Fast
Particle Retention 25 μm
Format Disc
Grade Grade 4
Material Cellulose
Porosity Medium
Filtration Speed 37 sec.
8
Promotions Available

Cytiva™ Whatman™ Grade 72 Activated Carbon Air Filter Paper

Activated Carbon Air Filter Papers are designed for monitoring of radioactive iodine air pollution in medical and nuclear installations. These Grade 72 cellulose filter papers are designed specifically for these safety critical environments, delivering sensitive and accurate results for analysis.

EDGE
9

Cytiva Whatman™ Qualitative Filter Paper: Grade 2 Circles

Retains and absorbs more than Grade 1 filters, with a corresponding increase in filtration time. Whatman™ Qualitative Filter Paper: Grade 2 Circles are used for monitoring specific contaminants in the atmosphere and in soil testing.

Thickness (Metric) 190 μm
Flow Rate Medium
Particle Retention >8 μm
Format Disc
Quantity 100 Pk.
Grade Grade 2
Material Cellulose
Porosity Medium Fine
Filtration Speed 240 sec.
For Use With (Application) A standard grade filter used for monitoring specific contaminants in the atmosphere and in soil testing.
10
Promotions Available

Cytiva Whatman™ Qualitative Filter Papers: Grade 2555½ Pleated Circles

Maintains flow rate with reduced contact between filter and funnel. Whatman™Grade 2555½ Pleated Circles are medium fast filter papers used for the filtration of the mash for the determination of the extract in malt and wort and for removing carbon dioxide from beer.

Thickness (Metric) 170 μm
Particle Retention 12 μm
Type Qualitative Filter Paper
Format Pre-pleated Circle
Grade Grade 2555 ½
Material Cellulose
Filtration Speed Approx. 55 s
For Use With (Application) A medium fast filter paper used for the filtration of the mash for the determination of the extract in malt and wort and for removing carbon dioxide from beer.
11

Cytiva Whatman™ Qualitative Grade Plain Circles and Sheets - Grade 3

Used for high precipitate capacity and increased wet strength. Whatman™ Qualitative Grade Plain Circles and Sheets - Grade 3 provide double the thickness of Whatman Grade 1.

Thickness (Metric) 390 μm
Grade Grade 3
Material Cellulose
For Use With (Application) A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.
12
Promotions Available

Cytiva Whatman™ Qualitative Filter Paper: Grade 593½ Pleated Circles

Maintains flow rate with reduced contact between filter and funnel. Whatman™Grade 593½ Pleated Circles are medium to slow filter papers used for fine precipitates.

Thickness (Metric) 170 μm
Pore Size 5 μm
Flow Rate Medium to slow
Particle Retention 5 μm
Format Pleated Circle
Quantity 100 Pk.
Grade Grade 593
Material Cellulose
Filtration Speed 450 s
For Use With (Application) A standard grade filter papers for fine precipitates.
13
Promotions Available

Cytiva Whatman™ 1573-1/2 Qualitative Filter Paper

Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses

14
Promotions Available

Cytiva Whatman™ Qualitative Filter Paper: Grade 5 Circles

Retains the fine precipitates encountered in chemical analysis. Whatman™ Qualitative Filter Paper - Grade 5 Circles are excellent clarifying filters for cloudy suspensions and for water and soil analysis.

Thickness (Metric) 200 μm
Pore Size 2.5 μm
Flow Rate Slow
Format Disc
Quantity 100 Pk.
Grade Grade 5
Material Cellulose
Porosity Fine
Filtration Speed 1420 sec.
For Use With (Application) A standard grade clarifying filter excellent for cloudy suspensions and for water and soil analysis.
15
Promotions Available

Cytiva Whatman™ Grade 597 Qualitative Filter Circles

Filters carbon dioxide and turbidity during beverage analysis. Whatman™ Grade 597 Qualitative Filter Circles may also be used to determine fat content in food analysis.

Thickness (Metric) 180 μm
Pore Size 4 to 7 μm
Flow Rate Medium Fast
Particle Retention 7 μm
Format Disc
Grade Grade 597
Material Cellulose
Filtration Speed Approx. 140 s
For Use With (Application) A standard grade filter used for a wide variety of analytical routine applications in different industries like food testing (e.g., determination of fat content) or removal of carbon dioxide and turbidity from beverages (e.g., beer analysis).