Pura Disc 25mm PTFE Syringe Filters, 1.0um, 1000 Pk
Whatman SKU: 6798-2510

Whatman Puradisc PTFE Syringe Filters, 1 µm, 25 mm, 1000/Pk - 6798-2510

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. Syringe filters span a wide range of membrane chemistries and pore sizes, so the format can be matched to the sample matrix and solvent system in use. Hydrophobic PTFE blocks aqueous ingress in vent and gas applications and handles concentrated acids and bases. The polypropylene housing resists aqueous acids, bases, and alcohols in routine use and maintains a low-dead-volume internal flow path. For routine sample preparation across many methods, each analytical run starts with a consistent, particle-free sample without added hardware or a cleaning step.

Technical Specifications

• Hydrofluoric acid resistance holds even in fully acid-digested samples
• UL 94 V-0 rating confirms the highest self-extinguishing classification
• High membrane porosity, 70 to 80 percent void volume, delivers high flow at low pressure
• Chemical resistance spans the full pH 1 to 14 range
• Biological inertness resists enzymatic attack from proteases and lipases

Housing Specifications

• Low moisture absorption keeps the housing dimensionally stable through humid storage and shipping
• Optimized internal geometry minimizes backpressure in service
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation.
• Withstands standard 121°C steam autoclave cycles without softening or structural distortion

Handling the harsh solvents your methods demand means choosing a filter built to withstand what passes through it, run after run. 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

1000

Pore Size (µm)

1

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Spirits Congener Analysis - Clarifies distilled spirits samples ahead of GC analysis, protecting columns from residue during congener profiling.
• Trace Metals Analysis - PTFE's low metal-extractable profile clarifies acid-digested samples for clean, low-background ICP-MS and ICP-OES results.
• Extractables Testing - Clarifies packaging material organic solvent extracts ahead of LC-MS analysis, keeping background low for leachable detection.
• Photoresist Filtration - Clarifies photoresist solutions in organic casting solvent ahead of spin-coating, reducing particulate defect risk.
• UV Spectroscopy - Clarifies solvent-based samples before UV/Vis analysis, removing scattering particulates for precise, reliable absorbance readings.
• Fuel Analysis Prep - Clarifies gasoline and other petroleum samples ahead of gas chromatography, protecting injector ports from residue buildup.