Pura Disc 25mm H-PTFE Syringe Filters 0.2um, Hydrophilic, 1000 Pk
Whatman SKU: 6774-2502

Whatman Puradisc Water-Wettable PTFE Syringe Filters, 0.2 µm, 25 mm, 1000/Pk - 6774-2502

Whatman's brand recognition and documented performance history support specification in standardized analytical methods. At the point of sample preparation, a syringe filter removes particulates before the sample reaches the instrument. Hydrophilic PTFE draws water-based and solvent samples through on contact while resisting strong acids, alkalis, and organic solvents and keeps protein binding low for accurate recovery. The PP housing stays inert across common laboratory solvents and buffers in routine use while sustaining efficient flow on viscous samples and keeps the fluid path low in extractable contamination. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Technical Specifications

• Absolute pore-size rating gives consistent retention across protocols
• Universal compatibility across aqueous buffers and organic solvents
• Low protein binding preserves dilute analytes for maximum recovery
• Water-wettable surface wets directly with both aqueous and organic samples
• Sterile-grade retention at sub-micron pore sizes

Housing Specifications

• Plasticizer-free polyolefin construction keeps the fluid path clean
• Medical-grade polypropylene with broad chemical compatibility
• Thermal-bonded construction keeps adhesives out of the fluid path
• Resists aqueous acids, bases, and alcohols in routine sample prep

Reproducible separations start with samples that reach the column free of particulates. Upstream sample clarification keeps your separations clean and reproducible from sample preparation through final injection. 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)

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

Hydrophilic Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

1000

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

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
• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• 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
• General Laboratory Filtration - Increases workflow efficiency by optimizing sample clarity without sacrificing flow rates
• Analytical Sample Prep - Optimized to ensure data integrity by effectively filtering contaminants before instrumental analysis