Pura Disc 13mm H-PTFE Syringe Filters 0.45um, Hydrophilic, 100/Pk
Whatman SKU: 6772-1304

Whatman Puradisc Water-Wettable PTFE Syringe Filters, 0.45 µm, 13 mm, 100/Pk - 6772-1304

Whatman's established manufacturing platform delivers the consistency and lot-level documentation that analytical laboratories require. A syringe filter seats a membrane in a sealed housing that threads onto a standard luer fitting. The hydrophilic PTFE membrane accepts aqueous samples without pre-wetting while clarifying particulates at the rated pore size and handles both aqueous buffers and organic solvents. The polypropylene housing routes flow to minimize backpressure in service while contributing minimal extractables to the filtrate and resists degradation from routine sample matrices. When chromatographic methods demand particle-free injections, point-of-use syringe filtration clarifies the sample before it reaches the column.

Technical Specifications

• Low protein binding preserves dilute analytes for maximum recovery
• Universal compatibility across aqueous buffers and organic solvents
• Absolute pore-size rating gives consistent retention across protocols
• Chemically inert to aggressive organic solvents, strong acids, and alkalis
• Water-wettable surface wets directly with both aqueous and organic samples

Housing Specifications

• Plasticizer-free polyolefin construction keeps the fluid path clean
• Rigid polypropylene body holds its shape under manual filtration pressure
• Tough polypropylene body tolerates repeated handling at the bench
• Low extractable contribution protects sensitive downstream analyses

Filtering particulates upstream protects the column investment your methods depend on. Upstream buffer clarification keeps avoidable particulates out of your flow path while keeping the filtrate analytically clean. Connect with our customer support technicians for chemical compatibility guidance and the right filtration product for your workflow.

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

13mm

Filtration Area

1.3cm²

Holdup Volume

<25µl

Material

Hydrophilic Polytetrafluoroethylene (PTFE)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

121°C

Pack Count

100

Pore Size (µm)

0.45

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 121°C

Volume Throughput (ml)

Up to 10ml

Wettability

Hydrophobic

• Cryogenic Fluids - Remains functional and integral even at extreme temperatures, protecting sensitive equipment from damage
• Organic Mobile Phases - Ideal for filtering 100% organic solvents in HPLC and GC workflows without any membrane degradation
• 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
• Sample Clarification - Protecting analytical instruments via rapidly removing particulates to maintain high throughput in busy laboratories
• Analytical Sample Prep - Optimized to ensure data integrity by effectively removing particulates before instrumental analysis