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1
Promotions Available

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.
2
Promotions Available

Cytiva Whatman™ Quantitative Filter Paper: Grade 50 Circles

Enables strong retention for very fine crystalline precipitates. Whatman™ Quantitative Filter Paper: Grade 50 Circles withstand shredding, wet handling, and precipitate removal by scraping.

EDGE
Thickness (Metric) 115 μm
Pore Size 2.7 μm
Flow Rate Slow
Type Quantitative Filter Paper
Format Disc
Airflow Rate 144 s/100 mL/in2
Quantity 100 Pk.
Grade Grade 50
Material Cotton Linters
Filter Type Hardened Low Ash
Porosity Fine
Filtration Speed ASTM, 250 seconds; Herzberg, 2685 seconds
3
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.
4
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.

EDGE
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.
5
Promotions Available

Cytiva Whatman™ Quantitative Filter Paper: Grade 41 Circles

Use for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates or for quantitative air pollution analysis. Whatman™ Quantitative Filter Paper: Grade 41 Circles are commonly used in preparing samples for metal analysis after nitric acid digestion.

EDGE
Thickness (Metric) 215 μm
Pore Size 20 μm
Flow Rate Fast
Particle Retention 20 μm
Type Quantitative Filter Paper
Format Disc
Quantity 100 Pk.
Material Cotton Linters
Porosity Coarse
Filtration Speed ASTM, 12 seconds; Herzberg, 54 seconds
6
Promotions Available

Cytiva Whatman™ Grade 2V Folded Qualitative Filter Papers
GSA_VA

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.

EDGE
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.
7
Promotions Available

Cytiva Whatman™ Grade 44 Quantitative Filter Paper

Reduces overall ash content and the amount of time required for filtration. Whatman™ Grade 44 Quantitative Filter Paper provides faster gravimetric analysis with filter thinner material.

EDGE
Thickness (Metric) 176 μm
Pore Size 3 μm
Flow Rate Medium
Particle Retention 3 μm
Type Quantitative Filter Paper
Format Disc
Airflow Rate 56 s/100 mL/in2
Quantity 100 Pk.
Grade Grade 44
Material Cotton Linters
Filter Type Ashless
Porosity Fine
Filtration Speed 995 sec.
8
Promotions Available

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.

EDGE
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.
9
Promotions Available

Cytiva Whatman™ Glass Microfiber Filter Paper Grade 6

Captures tiny particles without becoming weak. Whatman™ Glass Microfiber Filter Paper Grade 6 may also be used for determination of filterable substances and residue upon ignition or analysis of aggressive media.

Thickness (Metric) 350 μm
Flow Rate Slow
Particle Retention <1 μm
Grade GF 6
Material Borosilicate Glass
Filtration Speed 40 s/100mL/in2
10
Promotions Available

Cytiva Whatman™ Glass Microfiber Filter Paper Grade 9

Glass microfiber filter paper

Thickness (Metric) 350 μm
Flow Rate 27 s/100mL/1.56cm2
Format Disc
Grade GF 9
Material Glass Microfiber
11
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.
12
Promotions Available

Cytiva Whatman™ Quantitative Filter Paper: Grade 541 Circles

Recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Whatman™ Quantitative Filter Paper: Grade 541 Circles are acid hardened cellulose filters, which reduces ash to an extremely low level.

EDGE
Thickness (Metric) 155 μm
Particle Retention 22 μm
Type Quantitative Filter Paper
Format Disc
Airflow Rate 3 s/100 mL/in2
Quantity 100/Pk.
Grade Grade 541
Material Cotton Linters
Filter Type Hardened Ashless
Porosity Coarse
Filtration Speed ASTM, 12 seconds; Herzberg, 34 seconds
13
Promotions Available

Cytiva Whatman™ Grade 595 Qualitative Filter Circles
GSA_VA

Separates particles from food extracts and solids from digested environmental samples. Whatman™ Grade 595 Qualitative Filter Circles are designed for medium-fast, with medium to fine particulate retention.

EDGE
Particle Retention 7 μm
Format Disc
Grade Grade 595
Material Cellulose
Filtration Speed Approx. 80 s
For Use With (Application) A standard grade 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 for iCP/AAs analysis).
14
Promotions Available

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.

EDGE
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
15
Promotions Available

Cytiva Whatman™ Grade 92 Glass Microfiber Filter Paper

Improves performance and longevity of equipment. Whatman™ Grade 92 Glass Microfiber Filter Paper can be used for a wide range of applications.

Thickness (Metric) 350 μm
Format Disc
Grade GF 92
Material Borosilicate Glass
Porosity Medium