Pura Disc 25mm H-PTFE Syringe Filters 0.2um, Hydrophilic, 200 Pk
Whatman SKU: 6773-2502

Whatman Puradisc Water-Wettable PTFE Syringe Filters, 0.2 µm, 25 mm, 200/Pk - 6773-2502

Whatman applies the same process controls across its filtration portfolio, verifying rated performance at the production lot level. Across analytical workflows, the syringe filter is where particulates leave the sample stream. The hydrophilic PTFE membrane accepts aqueous samples without pre-wetting while achieving bacterial retention at the rated pore size and handles both aqueous buffers and organic solvents. Polypropylene construction resists chemical degradation from routine sample matrices while maintaining a low-dead-volume internal flow path 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

• Water-wettable surface wets directly with both aqueous and organic samples
• Chemically inert to aggressive organic solvents, strong acids, and alkalis
• Universal compatibility across aqueous buffers and organic solvents
• Sterile-grade retention at sub-micron pore sizes
• Absolute pore-size rating gives consistent retention across protocols

Housing Specifications

• Thermal-bonded construction keeps adhesives out of the fluid path
• Low extractable contribution protects sensitive downstream analyses
• Tough polypropylene body tolerates repeated handling at the bench
• Optimized internal geometry minimizes backpressure in service

Filtering every buffer before loading keeps your instrument running clean and uninterrupted. Upstream buffer clarification keeps avoidable particulates out of your flow path while keeping the filtrate analytically clean. 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

25mm

Filtration Area

4.2cm²

Flow Rate

~20 (MeOH)

Holdup Volume

<100µl

Material

Hydrophilic Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

200

Pore Size (µm)

0.2

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophobic

• Organic Mobile Phases - Ideal for filtering 100% organic solvents in HPLC and GC workflows without any membrane degradation
• Aerosol Sampling - The hydrophobic nature of PTFE allows for gas venting and air monitoring applications in harsh environments
• 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
• Quality Control Testing - Optimized for delivering reproducible results by filtering contaminants in standard pharmaceutical protocols
• Sample Clarification - Optimizing sample clarity via rapid filtering of contaminants to maintain high throughput in busy laboratories