GD/X 25mm Syringe Filter, PES, 0.45um (150 pcs)
Whatman SKU: 6876-2504

Whatman GD/X Polyethersulfone (PES) Syringe Filters, 0.45 µm, 25 mm, 510/Pk - 6876-2504

Whatman fits more prefiltration capacity into the GD/X housing without enlarging it, a space-efficient answer for samples too demanding for one filtration pass. Individually packaged and pre-tested, a syringe filter needs no functional check before use the way a shared reusable holder does. PES handles strong bases and oils across a broad aqueous range and loads aqueous buffers with zero pre-wetting delay. The polypropylene housing presses snugly against the membrane during the pass while sustaining structural integrity through elevated-temperature filtration operations and stays inert across common laboratory solvents. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Membrane Characteristics

• Pore structure integrity holds through autoclave cycles up to 126°C
• High flow rate pairs with a low extractable background
• Non-hydrogen-bonding surface avoids the polar adsorption nylon's amide backbone causes
• Aromatic sulfone backbone underlies stability across the full pH range
• Ionic extractables from the membrane stay very low

Housing Characteristics

• Medical-grade polypropylene with broad chemical compatibility
• Impact-tolerant polypropylene body withstands routine bench handling without damage
• Withstands standard 121°C steam autoclave cycles without softening or structural distortion
• Low moisture absorption keeps the housing dimensionally stable through humid storage and shipping

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. General-purpose aqueous filtration supports the sample types you handle every day so you can standardize one filter across most aqueous methods. Ask about Whatman's quality documentation to confirm your filtration step meets a recognized laboratory-science standard.

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

510

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

• Content Uniformity - Clarifies dense pharmaceutical samples easily, ensuring consistent results in uniformity testing without filter blockage.
• Tissue Processing - Prepares biological tissue homogenates smoothly, managing high protein and cellular debris for cleaner downstream analysis.
• Urine Drug Screening - Clarifies protein-poor urine samples for dilute-and-shoot LC-MS/MS toxicology testing without adsorbing target drug analytes.
• Serum Filtration - Clarifies serum and plasma samples quickly while retaining critical proteins needed for accurate downstream analytical testing.
• PFAS Water Testing - PES filters process aqueous samples for EPA Method 1633A PFAS testing without added fluorinated background.
• Sample Recovery - Minimizes sample loss in low-protein-binding applications, delivering high yield for precious or rare biological specimens.