Pura Disc 25mm PTFE Syringe Filters, 0.1um, 50 Pk
Whatman SKU: 6784-2501

Whatman Puradisc PTFE Syringe Filters, 0.1 µm, 25 mm, 50/Pk - 6784-2501

Whatman maintains in-house specialists who set and verify material specifications separately for its cellulose, glass-fiber, and polymer membrane chemistries, tailoring quality control to how each one behaves in use. The hydrophobic membrane stays dry and open to gas flow, so a vent line keeps running without wetting out during a single filtration cycle. PTFE suits solvent and reagent filtration where other membranes fail while blocking aqueous ingress in vent applications and stays chemically inert against solvents, acids, and alkalis. Polypropylene construction resists chemical degradation from routine sample matrices and sustains efficient flow on viscous samples. A vent or gas line stays free of airborne bacteria once a hydrophobic, sterilizing-grade membrane is in the path.

Technical Specifications

• Low non-specific protein binding preserves recovery of biomolecules and therapeutic proteins during filtration
• PTFE retains flexibility without embrittlement down to -73°C, allowing filtration of samples taken directly from cold-chain or freeze-thaw storage.
• PTFE retains membrane integrity across repeated autoclave sterilization cycles at 121°C to 134°C
• PTFE carries a UL 94 V-0 flammability rating, the highest self-extinguishing classification for polymer materials
• Hydrophobic PTFE retains its gas-venting, liquid-blocking function through repeated autoclave sterilization cycles.

Housing Specifications

• Polypropylene housing retains its chemical integrity under vaporized hydrogen peroxide decontamination cycles used in aseptic processing isolators.
• Injection-molded polypropylene housings accommodate threaded NPT and hose-barb port options beyond the standard luer taper
• Impact-tolerant polypropylene body withstands routine bench handling without damage
• Minimal extractable release from the housing supports sensitive analytical work downstream

Filtering aggressive solvents and reagents through a filter that holds up to the chemistry keeps your sample prep reliable. Reliable solvent prefiltration clears particulates from your organic samples from reaction mixtures and crude extracts through further processing. Contact Tisch Scientific for technical guidance on selecting the right filtration product for your specific application requirements.

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

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

25mm

Filtration Area

4.2cm²

Holdup Volume

<100µl

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

50

Pore Size (µm)

0.1

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Water Monitoring - After alcohol pre-wet, PTFE's chemical inertness holds up through repeated environmental sample runs without degrading.
• Polymer GPC Prep - Clarifies polymer solutions in THF ahead of gel permeation chromatography, protecting columns from particulates.
• Pump Protection - Acts as a hydrophobic barrier that protects vacuum pumps from corrosive moisture and particulate damage.
• Toxicology Screening - Clarifies protein-precipitated serum, plasma, and urine extracts ahead of LC-MS or GC-MS drug screening analysis.
• Spirits Congener Analysis - Clarifies distilled spirits samples ahead of GC analysis, protecting columns from residue during congener profiling.
• Air Monitoring - Ensures precise capture of airborne particulates for environmental analysis in demanding atmospheric monitoring conditions.