GD/X 25mm Sterile Syringe Filter, PES, 0.45um (50 pcs)
Whatman SKU: 6896-2504

Whatman GD/X Polyethersulfone (PES) Syringe Filters, 0.45 µm, 25 mm, 50/Pk - 6896-2504

Whatman's brand recognition and documented performance history support specification in standardized analytical methods. A syringe filter holds its membrane in a leak-tight housing for clarification at the bench. The PES matrix tolerates aqueous buffers, aliphatic alcohols, and glycols and draws aqueous samples through without pre-wetting. The PP housing prevents sample bypass under rated operating pressure while resisting aqueous acids, bases, and alcohols and maintains a low-dead-volume internal flow path. When sterile or particle-free preparation matters at the bench, the syringe filter delivers it with minimal added handling.

Technical Specifications

• Low protein binding preserves dilute analytes for maximum recovery
• Absolute pore size rating gives consistent results across protocols
• Naturally hydrophilic surface wets without pre-wetting in aqueous applications
• Broad compatibility with aqueous buffers, aliphatic alcohols, glycols, and strong bases
• High flow rate with low extractable background for clean preparations

Housing Specifications

• Low extractable contribution protects sensitive downstream analyses
• Optimized internal geometry minimizes backpressure in service
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Medical-grade polypropylene with broad chemical compatibility

Removing particulates from your buffers and mobile phases extends column life and keeps your baselines steady. Reliable particulate removal protects your instruments and your data before each HPLC, UPLC, and dissolution run. Call on the Tisch Scientific team to standardize filtration products across your methods with volume pricing and documentation.

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

Bubble Point (psi)

2.3 bar (33 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.6cm²

Flow Rate

30

Holdup Volume

1.4ml

Material

Polyethersulfone (PES)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

50

Pore Size (µm)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

Glass Microfiber (GMF)

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
• 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
• 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 removing particulates in standard pharmaceutical protocols
• General Laboratory Filtration - Increases workflow efficiency by protecting analytical instruments without sacrificing flow rates