Pura Disc 4 mm PTFE Syringe Filters, 0.45um, 500 Pk
Whatman SKU: 6783-0404

Whatman Puradisc PTFE Syringe Filters, 0.45 µm, 4 mm, 500/Pk - 6783-0404

Whatman applies over a century of filtration media expertise, manufacturing under the quality standards that established its products as global laboratory references. Across analytical workflows, the syringe filter is where particulates leave the sample stream. PTFE filters aggressive organic solvents without swelling or breakdown while suiting gas, vent, and solvent-stream filtration and withstands aggressive organics that degrade other media. The PP housing prevents sample bypass under rated operating pressure and holds extractables low for sensitive analyses. When method reproducibility rests on consistent sample prep, syringe filtration holds that standard injection after injection.

Technical Specifications

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

Housing Specifications

• Thermal-bonded construction keeps adhesives out of the fluid path
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Low extractable contribution protects sensitive downstream analyses
• Medical-grade polypropylene with broad chemical compatibility

Clarifying organic mobile phases before injection protects your chromatography while standing up to the solvent. Solvent-stream filtration handles the solvents and reagents your methods rely on across the organic solvents and harsh reagents your methods use. Reach out to the Tisch Scientific team for application support, volume pricing, and technical assistance with your filtration product selection.

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

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)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 2ml

Wettability

Hydrophobic

• Organic Mobile Phases - Ideal for filtering 100% organic solvents in HPLC and GC workflows without any membrane degradation
• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• Aerosol Sampling - The hydrophobic nature of PTFE allows for gas venting and air monitoring applications in harsh environments
• Aggressive Solvent Filtration - PTFE is chemically inert, making it the only choice for filtering strong acids and bases
• Quality Control Testing - Optimized for delivering reproducible results by removing particulates in standard pharmaceutical protocols
• General Laboratory Filtration - Increases workflow efficiency by protecting analytical instruments without sacrificing flow rates