Pura Disc 25mm PTFE Syringe Filters, 0.45um, 50 Pk
Whatman SKU: 6784-2504

Whatman Puradisc PTFE Syringe Filters, 0.45 µm, 25 mm, 50/Pk - 6784-2504

Whatman's brand recognition and documented performance history support specification in standardized analytical methods. A syringe filter holds its membrane in a leak-tight housing for clarification at the bench. The PTFE matrix handles concentrated acids and bases across demanding methods and withstands aggressive organics that degrade other media. The PP housing prevents sample bypass under rated operating pressure while keeping the fluid path low in extractable contamination and resists degradation from routine sample matrices. For routine sample preparation across many methods, the syringe filter folds clarification into one disposable step.

Technical Specifications

• Filters aggressive organic solvents without swelling or breakdown
• Chemically inert against aggressive solvents, strong acids, and alkalis
• Low extractables keep the chromatographic background clean
• Absolute pore size rating gives consistent results across protocols
• Stable across a wide operating temperature range for demanding methods

Housing Specifications

• 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
• 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 from reaction mixtures and crude extracts through final analysis. 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)

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

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

50

Pore Size (µm)

0.45

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
• 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
• Particulate Removal - Designed for removing particulates, this filter aids in protecting analytical instruments across diverse sample types
• Environmental Monitoring - Ideal for removing particulates in water and wastewater analysis to ensure regulatory compliance