Pura Disc 25mm PVDF Syringe Filters, 0.2um, 50 Pk
Whatman SKU: 6746-2502

Whatman Puradisc PVDF Syringe Filters, 0.2 µm, 25 mm, 50/Pk - 6746-2502

Whatman's expertise in cellulose, glass fiber, and polymeric membrane production guides material selection and quality control. A syringe filter holds its membrane in a leak-tight housing for clarification at the bench. PVDF resists HPLC mobile phases, alcohols, and mild hydrocarbons while achieving sterile-grade retention at sub-micron pore sizes and keeps analyte adsorption low for clean recovery. Polypropylene construction resists chemical degradation from routine sample matrices while routing flow to minimize backpressure in service and prevents sample bypass under rated operating pressure. Where small-volume samples must reach the instrument clean, syringe filtration clears particulates in a single pass.

Technical Specifications

• Resists HPLC mobile phases, alcohols, and mild hydrocarbons
• Hydrophilic surface wets aqueous and HPLC samples without pre-wetting
• Absolute pore size rating gives consistent results across protocols
• Mechanically durable membrane holds integrity under filtration pressure
• Sterilizing-grade retention at sub-micron pore sizes

Housing Specifications

• Resists aqueous acids, bases, and alcohols in routine sample prep
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Low extractable contribution protects sensitive downstream analyses
• Medical-grade polypropylene with broad chemical compatibility

Reproducible separations start with samples that reach the column free of particulates. Pre-injection filtration protects the resolution your methods depend on so your retention times and peak shapes stay consistent. Send your application details to our technical service team and request a filtration product recommendation.

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

Bubble Point (psi)

1.8 bar (26 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Polyvinylidene Difluoride (PVDF)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

50

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• HPLC Sample Prep - PVDF provides a great balance of chemical compatibility and low background noise for sensitive UV detection
• Protein Analysis - Ultra-low protein binding ensures that your expensive protein samples are not lost to the filter matrix
• Western Blotting - Optimized for often used in preparing samples for downstream blotting techniques where purity is paramount
• Clarification of Biologicals - Perfect for removing particulates from biological fluids without removing the target biomolecules
• Environmental Monitoring - Ideal for filtering contaminants in water and wastewater analysis to ensure regulatory compliance
• Particulate Removal - Designed for filtering contaminants, this filter aids in optimizing sample clarity across diverse sample types