Pura Disc 25mm PES Syringe Filters, 0.2um, 1000 Pk
Whatman SKU: 6794-2512

Whatman Puradisc Polyethersulfone (PES) Syringe Filters, 0.2 µm, 25 mm, 1000/Pk - 6794-2512

Whatman's expertise in cellulose, glass fiber, and polymeric membrane production guides material selection and quality control. Sample preparation for chromatography often ends with a syringe filter on the path to the vial. Low-binding PES preserves dilute proteins and analytes in the filtrate and wets on contact with aqueous buffers. Polypropylene construction maintains housing integrity through the filtration run while contributing minimal extractables to the filtrate and stays inert across common laboratory solvents. Where analytical results depend on clean samples, syringe filtration removes particulates at the moment of preparation.

Technical Specifications

• Sterile-grade retention at sub-micron pore sizes
• Naturally hydrophilic surface wets without pre-wetting in aqueous applications
• Stable across the full pH 1 to 14 operating range
• Absolute pore size rating gives consistent results across protocols
• High flow rate with low extractable background for clean preparations

Housing Specifications

• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Resists aqueous acids, bases, and alcohols in routine sample prep
• Optimized internal geometry minimizes backpressure in service
• Low extractable contribution protects sensitive downstream analyses

Sample clarification before injection is the cheapest insurance your chromatography system has. Upstream sample clarification keeps your separations clean and reproducible across your HPLC and UHPLC methods. 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
• Ion Chromatography - The extremely low extractable profile of PES provides the clean baselines needed for sensitive IC analysis
• Biological Sample Prep - The low protein-binding nature of PES ensures maximum recovery of critical enzymes and proteins
• Culture Media Filtration - PES offers the fastest flow rates for viscous culture media while maintaining absolute sterility
• Quality Control Testing - Optimized for delivering reproducible results by filtering contaminants in standard pharmaceutical protocols
• Analytical Sample Prep - Optimized to ensure data integrity by effectively filtering contaminants before instrumental analysis