Pura Disc 4 mm PTFE Syringe Filters, 0.2um, 500 Pk
Whatman SKU: 6783-0402

Whatman Puradisc PTFE Syringe Filters, 0.2 µm, 4 mm, 500/Pk - 6783-0402

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. Gas and vent service calls for a hydrophobic syringe filter rated to the same sterilizing-grade pore size as its liquid counterpart. Chemically inert PTFE resists attack from the harshest process chemistries while achieving sterile-grade retention in gas and vent service and blocks aqueous ingress in vent applications. The polypropylene housing routes flow to minimize backpressure in service while resisting degradation from routine sample matrices and keeps the sample chemically unaltered across the pass. No separate sterilization cycle is needed when the gas path already runs through a validated sterile-grade membrane.

Technical Specifications

• Node-fibril microstructure resists compaction under sustained operating pressure
• Absolute pore rating delivers reproducible retention across every protocol
• Strong oxidizing agents like nascent chlorine and concentrated sodium hydroxide cause no attack
• Hydrofluoric acid resistance holds even in fully acid-digested samples
• Biological inertness resists enzymatic attack from proteases and lipases

Housing Specifications

• Minimal extractable release from the housing supports sensitive analytical work downstream
• Optimized internal geometry minimizes backpressure in service
• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics
• Burst pressure rating provides a wide safety margin above the rated maximum operating pressure.

Removing particulates from organic solvents and reagents before they move downstream keeps contamination out of your results. Reliable solvent prefiltration clears particulates from your organic samples so your downstream method starts with a clean sample. Ask our customer support technicians for chemical compatibility guidance on your specific filtration application.

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

Bubble Point (psi)

1.0 bar (15 psi) [IPA]

Burst Pressure (psi)

75psi

Connection Type

Luer-Lok/ Luer Slip

Construction

Polypropylene

Diameter

4mm

Filtration Area

0.2cm²

Holdup Volume

<10µl

Material

Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

100°C

Pack Count

500

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 2ml

Wettability

Hydrophobic

• Air Monitoring - Ensures precise capture of airborne particulates for environmental analysis in demanding atmospheric monitoring conditions.
• Polymer GPC Prep - Clarifies polymer solutions in THF ahead of gel permeation chromatography, protecting columns from particulates.
• Dissolution Testing - Stops the dissolution reaction and clarifies samples, with low API binding for accurate potency quantitation.
• Cryogenic Fluids - Delivers consistent performance across extreme temperature ranges, filtering cryogenic liquids with dependable, reliable results.
• Non-Aqueous CE - Prepares non-aqueous electrophoresis samples with low background noise for clean, high-resolution separation and analysis.
• Toxicology Screening - Clarifies protein-precipitated serum, plasma, and urine extracts ahead of LC-MS or GC-MS drug screening analysis.