Pura Disc 25mm Nylon Syringe Filters, 0.2um, 50 Pk
Whatman SKU: 6750-2502

Whatman Puradisc Nylon Syringe Filters, 0.2 µm, 25 mm, 50/Pk - 6750-2502

Whatman standardizes its manufacturing platform to the point that consistency and thorough lot-level records come as a default, exactly what analytical laboratory work demands. A sterilizing-grade syringe filter carries manufacturer bacterial retention testing built into the design, giving analysts documented sterile-grade performance without repeating that testing in-house for the format. The nylon membrane holds dimensional stability under rated backpressure while achieving sterilizing-grade performance at finest pore openings and stays stable across pH 3 to 12. The polypropylene housing presses snugly against the membrane during the pass and sustains its dimensional form through high-temperature filtration workflows. Where bacterial contamination must stay out of the sample, manufacturer-tested retention keeps the instrument and downstream assay protected without a housing to maintain or clean.

Technical Specifications

• Autoclaving at 121°C for 30 minutes leaves pore structure intact
• Non-sterile format suits HPLC and GC sample clarification
• Moisture-plasticized amide linkages raise membrane impact toughness over dry resin
• Compatible with most HPLC mobile phases for sample clarification
• Solvent compatibility extends to both acetonitrile and methanol

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• Rigid polypropylene body maintains its geometry through routine filtration pressure
• Standardized luer connection geometry provides secure engagement with standard syringe tips
• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics

Upstream clarification pays for itself by keeping your columns clear and your analytical day on schedule. Pre-injection filtration protects the resolution your methods depend on by clearing particulates ahead of the column and frits. Standardize your filtration purchases across every method with volume pricing and documentation from the Tisch Scientific team.

For more information about chemical compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

2.9 bar (42 psi)

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Nylon

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

Hydrophilic

• Biofuel Particulate Testing - Removes particulate debris from biodiesel and fuel samples ahead of chromatographic QC analysis in fuel testing labs.
• Fermentation Monitoring - Clarifies samples from microbial fermentation for rapid analyte measurement of glucose, ethanol, and metabolite levels.
• UHPLC Sample Prep - Removes sub-micron debris from aqueous samples before injection, protecting narrow-bore UHPLC columns from accelerated wear.
• Solvent Filtering - Supports clarification of ester-based and alcohol solvents with precision during routine laboratory sample processing.
• HPLC Sample Prep - Clarifies mixed aqueous and organic solvents to ensure stable baselines and protect chromatography columns from clogging.
• IC Column Protection - Clarifies aqueous samples ahead of anion and cation analysis, guarding ion-exchange columns against particulate fouling.