Pura Disc 25mm PES Syringe Filters, 0.2um, 1000 Pk
Whatman SKU: 6794-2502

Whatman Puradisc Polyethersulfone (PES) Syringe Filters, 0.2 µm, 25 mm, 1000/Pk - 6794-2502

Whatman's expertise in cellulose, glass fiber, and polymeric membrane production guides material selection and quality control. A syringe filter seats a membrane in a sealed housing that threads onto a standard luer fitting. PES handles strong bases and oils across a broad aqueous range and accepts water-based reagents without preconditioning. The polypropylene housing contributes minimal extractables to the filtrate and maintains a low-dead-volume internal flow path. For routine sample preparation across many methods, the syringe filter folds clarification into one disposable step.

Technical Specifications

• Naturally hydrophilic surface wets without pre-wetting in aqueous applications
• Low protein binding preserves dilute analytes for maximum recovery
• Absolute pore size rating gives consistent results across protocols
• Stable across the full pH 1 to 14 operating range
• Sterile-grade retention at sub-micron pore sizes

Housing Specifications

• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Resists aqueous acids, bases, and alcohols in routine sample prep
• 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. Upstream sample clarification keeps your separations clean and reproducible from sample preparation through final injection. Ask the Tisch Scientific team about blanket-order pricing and quality documentation for your routine filtration needs.

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

Bubble Point (psi)

3.4 bar (50 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Polyethersulfone (PES)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

1000

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Life Science Applications - Ideal for filtering serum and plasma, where minimizing nonspecific binding is crucial for assay accuracy
• Culture Media Filtration - PES offers the fastest flow rates for viscous culture media while maintaining absolute sterility
• Biological Sample Prep - The low protein-binding nature of PES ensures maximum recovery of critical enzymes and proteins
• Ion Chromatography - The extremely low extractable profile of PES provides the clean baselines needed for sensitive IC analysis
• Quality Control Testing - Optimized for delivering reproducible results by filtering contaminants in standard pharmaceutical protocols
• Sample Clarification - Optimizing sample clarity via rapid filtering of contaminants to maintain high throughput in busy laboratories