Pura Disc 25mm H-PTFE Syringe Filters 0.2um, Hydrophilic, 50 Pk
Whatman SKU: 6772-2502

Whatman Puradisc Water-Wettable PTFE Syringe Filters, 0.2 µm, 25 mm, 50/Pk - 6772-2502

Whatman's established manufacturing platform delivers the consistency and lot-level documentation that analytical laboratories require. At the point of sample preparation, a syringe filter removes particulates before the sample reaches the instrument. Absolute-rated hydrophilic PTFE provides sterile-grade filtration at sub-micron pore sizes while wetting directly with aqueous and organic samples and resists strong acids, alkalis, and organic solvents. The polypropylene housing contributes minimal extractables to the filtrate while resisting aqueous acids, bases, and alcohols in routine use and sustains efficient flow on viscous samples. When chromatographic methods demand particle-free injections, point-of-use syringe filtration clarifies the sample before it reaches the column.

Technical Specifications

• Absolute pore-size rating gives consistent retention across protocols
• Water-wettable surface wets directly with both aqueous and organic samples
• Sterile-grade retention at sub-micron pore sizes
• Chemically inert to aggressive organic solvents, strong acids, and alkalis
• Universal compatibility across aqueous buffers and organic solvents

Housing Specifications

• Thermal-bonded construction keeps adhesives out of the fluid path
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Rigid polypropylene body holds its shape under manual filtration pressure
• Tough polypropylene body tolerates repeated handling at the bench

Filtering every buffer before loading keeps your instrument running clean and uninterrupted. Reliable particulate removal protects your instruments and your data across reagent, buffer, and mobile-phase preparation. Connect with our customer support technicians for chemical compatibility guidance and the right filtration product for your workflow.

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

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
• Organic Mobile Phases - Ideal for filtering 100% organic solvents in HPLC and GC workflows without any membrane degradation
• Aerosol Sampling - The hydrophobic nature of PTFE allows for gas venting and air monitoring applications in harsh environments
• Aggressive Solvent Filtration - PTFE is chemically inert, making it the only choice for filtering strong acids and bases
• Quality Control Testing - Optimized for delivering reproducible results by filtering contaminants in standard pharmaceutical protocols
• Particulate Removal - Designed for filtering contaminants, this filter aids in optimizing sample clarity across diverse sample types