GD/X 25mm Syringe Filter, PES, 0.2um (150 pcs)
Whatman SKU: 6876-2502

Whatman GD/X Polyethersulfone (PES) Syringe Filters, 0.2 µm, 25 mm, 150/Pk - 6876-2502

Whatman places a fibrous glass mat before the final membrane in every GD/X device, clearing a turbid sample in one pass through the same housing. A sterilizing-grade syringe filter delivers point-of-use sterile filtration in a single-use format, without the housing and gasket maintenance a reusable stainless steel filter holder requires. PES pairs fast flow with reduced protein and antibody adsorption while trapping bacteria reliably at its sterilizing-grade pore rating and handles strong bases across a broad aqueous range. Polypropylene construction holds its dimensional form through high-temperature sample preparation and maintains a low-dead-volume internal flow path. When sample preparation calls for a sterile filtrate at the point of injection, sterilizing-grade absolute retention delivers it directly, protecting the analytical method from microbial interference.

Membrane Characteristics

• Aromatic sulfone backbone underlies stability across the full pH range
• Non-hydrogen-bonding surface avoids the polar adsorption nylon's amide backbone causes
• Inherent hydrophilicity allows instant aqueous wetting with no pre-wetting step
• Antibody and protein samples pass through PES with minimal adsorptive loss
• Finest available pore ratings achieve aseptic-grade filtration performance

Housing Characteristics

• Housing tolerates elevated-temperature aqueous and solvent sample filtration up to about 80°C without softening.
• Burst pressure rating provides a wide safety margin above the rated maximum operating pressure.
• Inert polyolefin wall contributes minimal sample adsorption to the filtrate
• Optimized internal geometry minimizes backpressure in service

Filtering buffers, reagents, and aqueous samples keeps your preparation moving and consistent. General-purpose aqueous filtration supports the sample types you handle every day so you can standardize one filter across most aqueous methods. Describe your application to our technical service team and get pointed to the right filtration product.

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

4.6cm²

Flow Rate

46

Holdup Volume

1.4ml

Material

Polyethersulfone (PES)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

150

Pore Size (µm)

0.2

Prefilter (Yes/No)

Yes

Prefilter Material

Glass Microfiber (GMF)

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Sample Recovery - Minimizes sample loss in low-protein-binding applications, delivering high yield for precious or rare biological specimens.
• PFAS Water Testing - PES filters process aqueous samples for EPA Method 1633A PFAS testing without added fluorinated background.
• Tissue Processing - Prepares biological tissue homogenates smoothly, managing high protein and cellular debris for cleaner downstream analysis.
• Cell Culture - Reduces the risk of mycoplasma contamination in growth media, supporting healthier cell lines and more reliable experimental outcomes.
• Pesticide Residue Testing - PES membranes improve polar pesticide recovery in food-safety LC-MS/MS testing versus hydrogen-bonding nylon.
• Organic Carbon Testing - Clarifies water samples ahead of DOC and UV254 analysis while keeping organic carbon adsorption to the membrane minimal.