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Filters and Filtration

Devices and hardware for the filtration and analysis and purification of samples; includes complete kits, bottle-top filters, plates, storage bottles, stirred cells, membranes and papers, and other accessories in a range of sizes and materials.
Filter Paper (645)
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1 – 15 of 242 results
1

Cytiva Grade 740E Filter Discs

Meets FDA/WHO antibiotic-assay control disc standards. Whatman™ Grade 740E Filter Discs are thick, highly absorbent paper discs made of high-purity cotton linter for use in antibiotic-assay procedures.

2

Fisherbrand™ Qualitative Grade Plain Filter Paper Circles - P8 Grade

Ideal for clarifying and removing particles of 20μm and larger, and in applications that do not require a low-ash or ashless paper.

Flow Rate Fast: 160mL/min.
Particle Retention 20 to 25 μm
Format Disc
Quantity 100/Pk.
Grade P8
Material Cellulose
Porosity Coarse
Filtration Speed 55 sec.
For Use With (Application) Suitable for coarse and gelatinous precipitates. Retains Fe(OH)3, Al(OH)3, metallic sulfides, iron ores. For clarifying solutions, oils. For zinc analysis (Fe ppt removal). Size 19cm (09-804) widely used for sugar analysis.
3

Fisherbrand™ Qualitative Grade Plain Filter Paper Circles - P5 Grade

Ideal for clarifying and removing particles of 1μm and larger, and in applications that do not require a low-ash or ashless paper

Flow Rate Slow: 60mL/min.
Particle Retention 5 to 10 μm
Format Disc
Grade P5
Material Cellulose
Porosity Medium
Filtration Speed 230 sec.
For Use With (Application) General lab uses: clinical and spot testing, clarifying pharmaceuticals
4

Fisherbrand™ Qualitative Grade Plain Filter Paper Circles and Sheets - P4 Grade

Ideal for clarifying and removing particles of 1μm and larger, and in applications that do not require a low-ash or ashless paper

Flow Rate Slow: 25mL/min.
Particle Retention 4 to 8 μm
Format Disc
Grade P4
Porosity Medium Fine
Filtration Speed 730 sec.
For Use With (Application) General purpose: slightly slower, more retentive than P5. Retains MgNH4PO4, silver sulfide, cadmium sulfide. In air monitors, collects particulates and chromic acid mist
5

MilliporeSigma™ MF-Millipore™ Membrane Filter, 0.45 μm

MF-Millipore™ Membrane Filter are mixed cellulose esters (MCE) membrane, hydrophilic.

Thickness (Metric) 150 μm
Pore Size 0.45 μm
Disposable Reusable
Flow Rate 60 mL/min. x cm2
Wettability Hydrophilic
Type Filter Membranes
Material MCE
Filter Type Membrane Filter
Autoclavable Not Autoclavable
Sterility Non-sterile
6

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.
7

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.

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.
8

Cytiva Whatman™ Quantitative Filter Paper: Grade 42 Circles

Filters and retains extremely small particles. Whatman™ Quantitative Filter Paper: Grade 42 Circles are suitable for processes that require ashing.

Thickness (Metric) 200 μm
Pore Size 2.5 μm
Flow Rate Slow
Type Quantitative Filter Paper
Format Disc
Airflow Rate 96 s/100 mL/in2
Quantity 100 Pk.
Grade Grade 42
Material Cotton Linters
Filter Type Ashless
Porosity Fine
Filtration Speed 1870 sec.
For Use With (Application) Designed for gravimetric analysis and the preparation of samples for instrumental analysis.For critical gravimetric analysis with the finest particle retention.
9

Synthware™ Filter Tubes with Fritted Disc
GREENER_CHOICE

Used for filtration followed by recrystallization on opposite side of disc of air sensitive compounds

Material Borosilicate Glass (3.3)
10

Synthware™ Filter Tubes with Fritted Disc
GREENER_CHOICE

Used to filter particulates from substance

Includes Two 2 mm glass stopcocks
11

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.

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

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.

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
13

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/C

Combines fine particle retention with good flow rate. Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/C are ideal for the collection of suspended solids in potable water, natural and industrial wastes.

Thickness (Metric) 260 μm
Flow Rate 10.5 sec./100 mL
Particle Retention 1.2 μm
Temperature (English) Max. 932°F
Basis Weight 53 g/m2
Shape Circle
Format Disc
Description GE’s Whatman filter paper Grade GF/C glass filters offer a good flow rate and loading capacity that support total suspended solids analysis.
Thickness (English) 0.01 in.
Temperature (Metric) Max 500°C
Grade Grade GF/C
Material Borosilicate Glass
Waterflow Rate 105 mL/min
14

Cytiva Whatman™ Binder-Free Glass Microfiber Filters GF/F Circles

Served as the basis filter for EPA standard for the toxicity characteristic leaching procedure. Whatman™ Binder-Free Glass Microfiber Filters GF/F Circles offers an extremely high loading capacity and flow rate.

Particle Retention 0.7 μm
Temperature (English) Max. 932°F
Shape Circle
Description Whatman Grade GF/F filter from Cytiva's business is manufactured from pure borosilicate glass. GF/F offers very fine particle retention and good loading capacity and flow rate.
Temperature (Metric) Max 500°C
Grade Grade GF/F
Material Borosilicate Glass
For Use With (Application) Recommended for DNA binding and purification.Very effective in filtering finely precipitated proteins.Can be used in conjunction with GF/D as a prefilter for the successful clarification of extremely ‘difficult’ biochemical solutions and fluids and nucl
Thickness (Metric) 420 μm
Flow Rate 19 sec./100mL/in.2
Type Filter for TCLP Test Use
Format Disc
Thickness (English) 0.016 in.
Autoclavable Autoclavable
Waterflow Rate 41 mL/min
15

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade 934-AH Circles

Designed for analysis of non-filterable residue and materials that require a high loading capacity glass microfiber filter. Whatman™ Binder-Free Glass Microfiber Filters, Grade 934-AH Circles are also used in cell harvesting, liquid scintillation, and monitoring pollution.

Particle Retention 1.5 μm
Temperature (English) Max. 932°F
Shape Circle
Description Whatman Grade 934-AH borosilicate glass microfiber filters from GE are smooth water quality filters with high retention efficiency. Grade 934-AH filters are often used in total suspended solids analysis.
Filtration Time 47 sec./100mL
Quantity 100 Pack
Grade Grade 934-AH
Material Borosilicate Glass
Thickness (Metric) 435 μm
Flow Rate 3.7 sec./100mL/in.2
Type Filter for Total Suspended Solids Analysis
Basis Weight 64 g/m2
Format Disc
Thickness (English) 0.017 in.
Surface Type Smooth
Waterflow Rate 341 mL/min