Anotop 25mm Syringe Filter, 0.1um, 50 Pk
Whatman SKU: 6809-2012

Whatman Anotop Aluminum Oxide Syringe Filters, 0.1 µm, 25 mm, 50/Pk - 6809-2012

Whatman's Anotop line separates by physical particle dimension alone, a capability rooted in ceramic media chemistry rather than the organic polymer chemistries used in most other membrane technologies. Sterilizing-grade syringe filters deliver sterile-grade retention as a single-use format, eliminating the autoclaving and cleaning cycle a reusable sterile filtration setup would require. Aluminum oxide's straight channels pull samples by capillary action while confining bacteria to its absolute micron-scale cutoff and tolerates high temperatures and broad solvent ranges. The polypropylene housing keeps the sample chemically unaltered across the pass while sustaining efficient flow on viscous samples and resists degradation from routine sample matrices. For workflows requiring validated sterile-grade performance, point-of-use retention meets it without a separate sterilization step.

Membrane Characteristics

• Absolute pore-size rating holds consistent across every protocol
• Uniform capillary pore array gives high pore density without lateral crossover
• Inorganic ceramic structure resists solvent swelling common to polymer membrane materials
• Extractable content stays minimal without interfering with downstream detection
• Naturally hydrophilic ceramic surface wets without pre-wetting in aqueous samples

Housing Characteristics

• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics
• Translucent housing wall allows visual confirmation of sample flow during filtration
• Minimal extractable release from the housing supports sensitive analytical work downstream
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. Consistent aqueous clarification clears particulates without slowing your bench routine the same way every time you run it. Start a live chat with our customer support technicians for quick answers to your compatibility, sizing, and sterility questions.

For more information about chemical compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

6.2 bar (90 psi)

Burst Pressure (psi)

100psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Anopore (Aluminum Oxide)

Diameter

25mm

Filtration Area

4.15cm²

Holdup Volume

<150µl

Material

Anopore

Maximum Operating Pressure

100psi

Maximum Operating Temperature (°C)

40°C

Pack Count

50

Pore Size (µm)

0.1

Prefilter (Yes/No)

No

Sterility

Nonsterile

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Liposome Extrusion - Size liposomes into uniform vesicles precisely, enabling consistent drug delivery research with defined pore structures.
• Drinking Water Compliance - Concentrates microorganisms from potable water samples for enumeration and regulatory-method pathogen detection testing.
• NMR Sample Filtration - Delivers aggregate-free aqueous filtrates with no organic extractables interfering with proton or carbon NMR spectra.
• Drug Nanoparticle QC - Removes oversized aggregates from nanoparticle drug carriers before size and zeta potential analysis for formulation release.
• Membrane Protein Research - Filters detergent-solubilized protein preparations to remove insoluble aggregates before crystallography and cryo-EM.
• Vaccine Particle QC - Filters virus-like particle and VLP formulations to remove aggregates before particle size distribution and potency analysis.