Pura Disc 25mm H-PTFE Syringe Filters 0.45um, Hydrophilic, 200 Pk
Whatman SKU: 6773-2504

Whatman Puradisc Water-Wettable PTFE Syringe Filters, 0.45 µm, 25 mm, 200/Pk - 6773-2504

Whatman applies over a century of filtration media expertise, manufacturing under the quality standards that established its products as global laboratory references. Syringe filters mount on a syringe to clarify a sample in a single manual pass. The hydrophilic PTFE membrane minimizes analyte loss to the surface while filtering aqueous and organic samples in one membrane and wets directly with aqueous and organic samples. The PP housing sustains efficient flow on viscous samples while maintaining housing integrity through the filtration run and holds extractables low for sensitive analyses. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Technical Specifications

• Low protein binding preserves dilute analytes for maximum recovery
• Chemically inert to aggressive organic solvents, strong acids, and alkalis
• Absolute pore-size rating gives consistent retention across protocols
• Water-wettable surface wets directly with both aqueous and organic samples
• Universal compatibility across aqueous buffers and organic solvents

Housing Specifications

• Resists aqueous acids, bases, and alcohols in routine sample prep
• Optimized internal geometry minimizes backpressure in service
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Tough polypropylene body tolerates repeated handling at the bench

Removing particulates from your buffers and mobile phases extends column life and keeps your baselines steady. Reliable particulate removal protects your instruments and your data before each HPLC, UPLC, and dissolution 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

4.2cm²

Flow Rate

~30 (MeOH)

Holdup Volume

<100µl

Material

Hydrophilic Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

200

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Aggressive Solvent Filtration - PTFE is chemically inert, making it the only choice for filtering strong acids and bases
• 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
• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• Analytical Sample Prep - Optimized to ensure data integrity by effectively removing particulates before instrumental analysis
• Particulate Removal - Designed for removing particulates, this filter aids in protecting analytical instruments across diverse sample types