GD/X 25mm Syringe Filter, PTFE Filteration Medium, 0.2um (150 pcs)
Whatman SKU: 6874-2502

Whatman GD/X PTFE Syringe Filters, 0.2 µm, 25 mm, 150/Pk - 6874-2502

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. A single-use hydrophobic vent filter reaches sterilizing-grade retention on a vent line without the autoclave cycle or in-line housing a reusable gas filtration setup would require. Hydrophobic PTFE blocks aqueous ingress in vent and gas applications while delivering sterilizing-grade gas and vent filtration and resists attack from the harshest process chemistries. Low-extractable polypropylene keeps sample purity intact through the filtration pass and holds its geometry through sample filtration at temperatures up to 121°C. No separate sterilization cycle is needed when the gas path already runs through a validated sterile-grade membrane.

Membrane Characteristics

• Low extractables keep the chromatographic background clean
• Absolute pore rating delivers reproducible retention across every protocol
• Stable across a wide operating temperature range for demanding methods
• Water contact angle near 120 degrees marks strong hydrophobicity
• Strong oxidizing agents like nascent chlorine and concentrated sodium hydroxide cause no attack

Housing Characteristics

• The seal formed against the membrane blocks bypass at rated operating pressure
• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics
• Minimal extractable release from the housing supports sensitive analytical work downstream
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.

Filtering aggressive solvents and reagents through a filter that holds up to the chemistry keeps your sample prep reliable. Solvent-stream filtration handles the solvents and reagents your methods rely on from initial prep through final use. Request Whatman's lot documentation and performance history to support your protocol validation.

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

Bubble Point (psi)

1.0 bar (15 psi) [IPA]

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.6cm²

Holdup Volume

1.4ml

Material

GF/PTFE

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

Hydrophobic

• Fuel Analysis Prep - Clarifies gasoline and other petroleum samples ahead of gas chromatography, protecting injector ports from residue buildup.
• Dissolution Testing - Stops the dissolution reaction and clarifies samples, with low API binding for accurate potency quantitation.
• Mobile Phase Prep - Extends column life by consistently removing particulates from organic HPLC mobile phases before every injection.
• Photoresist Filtration - Clarifies photoresist solutions in organic casting solvent ahead of spin-coating, reducing particulate defect risk.
• QuEChERS Extract Cleanup - Clears matrix debris from acetonitrile-based pesticide extracts with a glass prefilter ahead of LC-MS/MS analysis.
• Battery Electrolyte Prep - Clarifies lithium-ion battery electrolyte in carbonate solvents ahead of GC-MS purity and impurity analysis.