Anotop Plus 25mm Syringe Filter w/GMF PreFilter, 0.02 um, 50 Pk
Whatman SKU: 6809-4002

Whatman Anotop Aluminum Oxide Syringe Filters, 0.02 µm, 25 mm, 50/Pk - 6809-4002

Whatman applies over a century of filtration media expertise, manufacturing under the quality standards that established its products as global laboratory references. A syringe filter holds its membrane in a leak-tight housing for clarification at the bench. Naturally hydrophilic aluminum oxide wets on contact with aqueous samples while keeping protein binding low for high analyte recovery and sustains high flow with a narrow pore distribution. Polypropylene construction maintains housing integrity through the filtration run while resisting aqueous acids, bases, and alcohols and keeps the fluid path low in extractable contamination. Where analytical results depend on clean samples, syringe filtration removes particulates at the moment of preparation.

Technical Specifications

• Absolute pore-size rating gives consistent retention across protocols
• Naturally hydrophilic ceramic surface wets without pre-wetting in aqueous samples
• Low protein binding preserves dilute analytes for maximum sample recovery
• Chemically inert alumina compatible with aqueous solutions, alcohols, and organic solvents
• Uniform capillary pore array gives high flow and high pore density

Housing Specifications

• Thermal-bonded construction keeps adhesives out of the fluid path
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Optimized internal geometry minimizes backpressure in service
• Medical-grade polypropylene with broad chemical compatibility

Filtering particulates upstream protects the column investment your methods depend on. Upstream buffer clarification keeps avoidable particulates out of your flow path while keeping the filtrate analytically clean. 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)

6.9 bar (100 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)

0.02

Prefilter (Yes/No)

No

Sterility

Nonsterile

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Research & Development - Supports protocols that need to filter contaminants, providing the ability to optimize sample clarity
• Environmental Monitoring - Ideal for filtering pollutants in water and wastewater analysis to ensure regulatory compliance
• General Laboratory Filtration - Increases workflow efficiency by optimizing sample clarity without sacrificing flow rates
• Analytical Sample Prep - Optimized to ensure data integrity by effectively filtering contaminants before instrumental analysis
• Biological Fluid Analysis - Protects sensitive downstream instruments from filtering contaminants that can cause system failure
• Sample Clarification - Optimizing sample clarity via rapid filtering of contaminants to maintain high throughput in busy laboratories