Pura Disc 13mm H-PTFE Syringe Filters 0.45um, Hydrophilic, 500 Pk
Whatman SKU: 6773-1304

Whatman Puradisc Water-Wettable PTFE Syringe Filters, 0.45 µm, 13 mm, 500/Pk - 6773-1304

Whatman manufactures under Cytiva's quality infrastructure, drawing on a filtration heritage that spans laboratory, environmental, and industrial applications. At the point of sample preparation, a syringe filter removes particulates before the sample reaches the instrument. The hydrophilic PTFE membrane clarifies particulates at the rated pore size and preserves dilute proteins in the filtrate. The PP housing keeps the fluid path low in extractable contamination while resisting aqueous acids, bases, and alcohols in routine use and prevents sample bypass under rated operating pressure. When sterile or particle-free preparation matters at the bench, the syringe filter delivers it with minimal added handling.

Technical Specifications

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

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• 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

Reproducible separations start with samples that reach the column free of particulates. Pre-injection filtration protects the resolution your methods depend on so your retention times and peak shapes stay consistent. Send your application details to our technical service team and request a filtration product recommendation.

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

13mm

Filtration Area

1.3cm²

Holdup Volume

<25µl

Material

Hydrophilic Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

500

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• 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
• Aerosol Sampling - The hydrophobic nature of PTFE allows for gas venting and air monitoring applications in harsh environments
• 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