Pura Disc 4 mm PTFE Syringe Filters, 0.2um, 100/Pk
Whatman SKU: 6784-0402

Whatman Puradisc PTFE Syringe Filters, 0.2 µm, 4 mm, 100/Pk - 6784-0402

Whatman manufactures under Cytiva's quality infrastructure, drawing on a filtration heritage that spans laboratory, environmental, and industrial applications. A syringe filter holds its membrane in a leak-tight housing for clarification at the bench. Hydrophobic PTFE repels water while passing gases and solvents freely while withstanding aggressive organics that degrade other media and provides bacterial retention in gas and vent streams. The polypropylene housing holds a reliable seal against the membrane edge and stays inert across common laboratory solvents. Where analytical results depend on clean samples, syringe filtration removes particulates at the moment of preparation.

Technical Specifications

• Stable across a wide operating temperature range for demanding methods
• Low extractables keep the chromatographic background clean
• Hydrophobic membrane repels water for gas, vent, and solvent filtration
• Filters aggressive organic solvents without swelling or breakdown
• Sterilizing-grade gas and vent filtration at sub-micron pore sizes

Housing Specifications

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

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 final analysis. 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)

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

100

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 2ml

Wettability

Hydrophobic

• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• Aggressive Solvent Filtration - PTFE is chemically inert, making it the only choice for filtering strong acids and bases
• Aerosol Sampling - The hydrophobic nature of PTFE allows for gas venting and air monitoring applications in harsh environments
• Organic Mobile Phases - Ideal for filtering 100% organic solvents in HPLC and GC workflows without any membrane degradation
• Biological Fluid Analysis - Protects sensitive downstream instruments from filtering contaminants that can cause system failure
• Particulate Removal - Designed for filtering contaminants, this filter aids in optimizing sample clarity across diverse sample types