GD/X 25mm Syringe Filter, PTFE Filteration Medium, 0.45um (150 pcs)
Whatman SKU: 6875-2504

Whatman GD/X PTFE Syringe Filters, 0.45 µm, 25 mm, 150/Pk - 6875-2504

Whatman's brand recognition and documented performance history support specification in standardized analytical methods. Under hand pressure from the syringe, the membrane captures particulates as the sample passes through. Chemically inert PTFE resists attack from the harshest process chemistries while clarifying solvent streams at the rated pore size and handles concentrated acids and bases. The polypropylene housing holds a reliable seal against the membrane edge while resisting degradation from routine sample matrices and keeps the fluid path low in extractable contamination. Where small-volume samples must reach the instrument clean, syringe filtration clears particulates in a single pass.

Technical Specifications

• Low extractables keep the chromatographic background clean
• Chemically inert against aggressive solvents, strong acids, and alkalis
• Hydrophobic membrane repels water for gas, vent, and solvent filtration
• Absolute pore size rating gives consistent results across protocols
• Filters aggressive organic solvents without swelling or breakdown

Housing Specifications

• Low extractable contribution protects sensitive downstream analyses
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Optimized internal geometry minimizes backpressure in service
• Resists aqueous acids, bases, and alcohols in routine sample prep

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 so your filter holds its integrity through the 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)

0.6 bar (9 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)

0.45

Prefilter (Yes/No)

Yes

Prefilter Material

Glass Microfiber (GMF)

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Aerosol Sampling - The hydrophobic nature of PTFE allows for gas venting and air monitoring applications in harsh environments
• Organic Mobile Phases - Ideal for filtering 100% organic solvents in HPLC and GC workflows without any membrane degradation
• Aggressive Solvent Filtration - PTFE is chemically inert, making it the only choice for filtering strong acids and bases
• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• General Laboratory Filtration - Increases workflow efficiency by protecting analytical instruments without sacrificing flow rates
• Research & Development - Supports protocols that need to remove particulates, providing the ability to protect analytical instruments