Pura Disc 25mm PTFE Syringe Filters, 0.2um, 50 Pk
Whatman SKU: 6784-2502

Whatman Puradisc PTFE Syringe Filters, 0.2 µm, 25 mm, 50/Pk - 6784-2502

Whatman's expertise in cellulose, glass fiber, and polymeric membrane production guides material selection and quality control. 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 suiting solvent filtration where other membranes fail and provides bacterial retention in gas and vent streams. The PP housing prevents sample bypass under rated operating pressure and contributes minimal extractables to the filtrate. For routine sample preparation across many methods, the syringe filter folds clarification into one disposable step.

Technical Specifications

• Hydrophobic membrane repels water for gas, vent, and solvent filtration
• Chemically inert against aggressive solvents, strong acids, and alkalis
• Low extractables keep the chromatographic background clean
• Sterilizing-grade gas and vent filtration at sub-micron pore sizes
• Stable across a wide operating temperature range for demanding methods

Housing Specifications

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

Clarifying organic mobile phases before injection protects your chromatography while standing up to the solvent. Reliable solvent prefiltration clears particulates from your organic samples so your downstream method starts with a clean sample. Request a quality certificate, lot documentation, or a blanket-order quote from the Tisch Scientific support team.

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

4.2cm²

Flow Rate

~20 (MeOH)

Holdup Volume

<100µl

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

50

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• Aggressive Solvent Filtration - PTFE is chemically inert, making it the only choice for filtering strong acids and bases
• 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
• Analytical Sample Prep - Optimized to ensure data integrity by effectively filtering contaminants before instrumental analysis
• General Laboratory Filtration - Increases workflow efficiency by optimizing sample clarity without sacrificing flow rates