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1 – 15 of 99 results
1

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 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.

EDGE
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.
3

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.
4

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).
5

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.
6

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.

Thickness (Metric) 0.04 mm
Format Sheet
Quantity 500 Pk.
Grade B-2
Material Parchment Paper
7

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.

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).
8

Cytiva Whatman™ Grade 2V Folded Qualitative Filter Papers

Saves time required to fit circles into conical funnels. Whatman™ Grade 2V Folded Qualitative Filter Papers provide medium flow and nominal particle retention rating of 8μm at a higher filtration speed.

Thickness (Metric) 190 μm
Pore Size >8 μm
Flow Rate Medium
Format Pre-pleated Circle
Quantity 100 Pk.
Grade Grade 2V
Material Cellulose
Porosity Medium Fine
Filtration Speed 240 sec.
For Use With (Application) Certified for cereal analysis methods. Normal loading capacity, limited wet strength.
9

Cytiva Whatman™ Reeve Angel 230 Creped Qualitative Circles

Provide reliable performance for non-critical industrial laboratory and student lab applications

Thickness (Metric) 0.4 mm
Particle Retention 25 to 30 μm
Format Disc
Grade 230
Material Cellulose
Porosity Coarse
10

Cytiva Whatman™ Qualitative Filter Paper: Grade 6 Circles

Filters particles twice as fast as Whatman Qualitative Filter Paper Grade 5. Whatman™ Qualitative Grade 6 Filters provide fine particle retention for boiler water analysis.

Thickness (Metric) 180 μm
Flow Rate Medium to slow
Particle Retention 3 μm
Format Disc
Quantity 100 Pk.
Grade Grade 6
Material Cellulose
Porosity Fine
Filtration Speed Herzberg 715 sec.
For Use With (Application) A standard grade filter for boiler water analysis.
12

Cytiva Whatman™ Qualitative Filter Paper: Grade 113 Circles

Strengthened with chemically stable resin additive. Whatman™ Qualitative Filter Paper: Grade 113 Circles boast the fastest flow rate of the qualitative grades. Crepe surface promotes ultra high loading capacity.

Thickness (Metric) 420 μm
Particle Retention 30 μm
Format Disc
Quantity 100 Pk.
Grade Grade 113
Material Cellulose
Filtration Speed 1.3 s/100 mL/in2
13

Cytiva Whatman™ Qualitative Filter Paper: Grade 113V Circles

Saves time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses. Whatman™ Qualitative Filter Paper: Grade 113V Circles boast the fastest flow rate of the qualitative grades. Crepe surface promotes ultra high loading capacity.

Thickness (Metric) 420 μm
Pore Size >30 μm
Flow Rate Fast
Particle Retention 30 μm
Format Pleated Circle
Grade Grade 113V
Material Cellulose
Filtration Speed Herzberg 28 sec.
For Use With (Application) GE’s Whatman Grade 113V creped filter paper, for use with a conical filter funnel, offers fast filtration and high loading capacity for analysis involving coarse particles or gelatinous precipitates.
14

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).
15

Cytiva Whatman™ Grade 114 Wet-Strengthened Qualitative Filter Paper: Circle

Coarse paper with creped or smooth surface

Thickness (Metric) 190 μm
Particle Retention 25 μm
Format Disc
Quantity 100 Pk.
Grade Grade 114
Material Cellulose
Filtration Speed 5.3 s/100 mL/in2
For Use With (Application) Only half the thickness of Grade 113 and suitable for coarse or gelatinous precipitates. Smooth surface for easy recovery of precipitates.