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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.
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1 – 15 of 796 results
1

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.

EDGE
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
2

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
3

Cytiva Whatman™ Type WCN Cellulose Nitrate Membranes

Recommended for majority of routine applications, this membrane is manufactured under strictly controlled conditions. Whatman™ Type WCN Cellulose Nitrate Membranes narrow pore size distribution for improved surface capture and analysis.

EDGE
Color White
Material Cellulose Nitrate
Autoclavable Autoclavable
4

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.
5
Promotions Available

Cytiva Acrodisc™ Syringe Filters with Supor™ Membrane, Sterile

Sterile Acrodisc syringe filters featuring Supor™ membrane for high throughputs, fast filtration, and low protein binding. Available in 13 mm, 25 mm and 32 mm sizes, with pore sizes ranging from 0.1 μm to 5.0 μm.

EDGE
Material (Membrane) PES
Sterility Sterile
6

Cytiva Whatman™ 1PS Disposable Phase Separating Paper

Creates a hydrophobic filter that can replace separatory funnel in some applications. Whatman™ 1PS Disposable Phase Separating Paper is impregnated with stable silicone to allow solvent phases to pass through while retaining aqueous phases.

EDGE
Type Separator Paper
Material Fiberglass/Silicone
For Use With (Application) Liquid phase separation
7

Cytiva Whatman™ ReZist Air Venting Filter, 50mm, PTFE, 0.2μm, sterile

Lightweight air venting units suitable for protective vents in-line filtration, and isolation applications when working with chemicallly harsh solvents

EDGE
8

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

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.

EDGE
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.
10

Cytiva Whatman™ 30mm SPARTAN™ Regenerated Cellulose Syringe Filters

Provides reproducible results from the filtration of organic and aqueous solutions in HPLC. Whatman™ 30mm Spartan™ Regenerated Cellulose Syringe Filters is resistant to common HPLC solvents and exhibits very low levels of extractables that could otherwise interfere with analysis.

EDGE
Type Syringe Filter
Outlet Style Male Luer
Diameter (Metric) 30 mm
Inlet Style Female Luer Lock
Housing Material Polypropylene
Material (Membrane) Regenerated Cellulose
For Use With (Application) Filtration of organic and aqueous solutions in HPLC with reproducible results; Purification of aqueous and organic solutions; Filtration of protein solutions
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.

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

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

Filters fine particles with high wet-strength and high loading capacity. Whatman™ Binder-Free Microfiber Filters, Grade GF/B are particularly useful for liquid clarification and liquid scintillation counting.

EDGE
Thickness (Metric) 675 μm
Flow Rate 5.5 sec./100mL
Particle Retention 1.0 μm
Type Filter
Temperature (English) Max. 932°F
Basis Weight 143 g/m2
Format Disc
Description GE’s Whatman brand Grade GF/B is a thick filter with fine particle filter and good loading capacity. GF/B filters are particularly useful for liquid clarification and liquid scintillation counting.
Thickness (English) 0.02 in.
Temperature (Metric) Max 500°C
Grade Grade GF/B
Material Borosilicate Glass
Waterflow Rate 81 mL/min
13

Cytiva Whatman™ Puradisc 25mm PTFE Syringe Filters

Contains hydrophobic membrane that is chemically stable and inert. Whatman™ Puradisc 25mm PTFE Syringe Filters exhibit low protein binding, and its main application is filtration of non-aqueous samples.

EDGE
Type Syringe Filter
Dimensions (L x W x H) 22.9 x 28.4 mm
Outlet Style Male Luer
Diameter (Metric) 25 mm
Inlet Style Female Luer Lock
Material (Membrane) PTFE
Volume (Metric) Up to 100 mL
Pressure Rating 5.2 bar (75 psi)
Material PTFE
For Use With (Application) For HPLC, TLC, and GC sample clarification; HPLC solvent filtration
Sterility Non-sterile
Filtration Area 4.2 cm2
14

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
15
Promotions Available

Cytiva Acrodisc™ Syringe Filters with Glass Fiber Filter

Available with GxF multi-layered glass fiber prefilter, providing two to four times the throughput of standard glass fiber prefilter devices, and allowing quick and easy filtration of your most difficult-to-filter samples.

EDGE
Pore Size 1 μm
Housing Material Polypropylene
Material (Membrane) Borosilicate Glass Fiber
Sterility Non-sterile