GD/X 25mm Sterile Syringe Filter, PES, 0.2um (50 pcs)
Whatman SKU: 6896-2502

Whatman GD/X Polyethersulfone (PES) Syringe Filters, 0.2 µm, 25 mm, 50/Pk - 6896-2502

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. Sterilizing-grade syringe filters deliver sterile-grade retention as a single-use format, eliminating the autoclaving and cleaning cycle a reusable sterile filtration setup would require. PES's native polysulfone needs a surface treatment before it wets and reaches sterile-grade performance while protecting analyte yield. Polypropylene construction maintains a low-dead-volume internal flow path while shedding virtually no extractable material into the sample and holds its seal true run after run. Where bacterial contamination must stay out of the sample, manufacturer-tested retention keeps the instrument and downstream assay protected without a housing to maintain or clean.

Membrane Characteristics

• Aromatic sulfone backbone underlies stability across the full pH range
• Sulfone backbone's hydrolytic stability tolerates repeated autoclave steam sterilization cycles
• Chemical breadth spans alcohols, glycols, and aqueous buffers
• DNA and RNA pass through with negligible adsorptive loss
• Mechanical strength keeps the matrix intact under vacuum or pressure

Housing Characteristics

• Housing retains dimensional stability and seal integrity through elevated-temperature operation up to 121°C.
• Low moisture absorption keeps the housing dimensionally stable through humid storage and shipping
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.
• Plasticizer-free polyolefin construction keeps the fluid path clean

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, UHPLC, and dissolution run. Ask our friendly customer service team to confirm the pore size, membrane, and sterility options your filtration application calls for.

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

50

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

• Organic Carbon Testing - Clarifies water samples ahead of DOC and UV254 analysis while keeping organic carbon adsorption to the membrane minimal.
• Sample Recovery - Minimizes sample loss in low-protein-binding applications, delivering high yield for precious or rare biological specimens.
• Biological Assays - Protects sensitive enzymatic and antibody-based assays from particulate interference without adsorbing critical reagents.
• Tissue Processing - Prepares biological tissue homogenates smoothly, managing high protein and cellular debris for cleaner downstream analysis.
• Pesticide Residue Testing - PES membranes improve polar pesticide recovery in food-safety LC-MS/MS testing versus hydrogen-bonding nylon.
• Cell Culture - Reduces the risk of mycoplasma contamination in growth media, supporting healthier cell lines and more reliable experimental outcomes.