Pura Disc 25mm GF/F GMF Syringe Filters, 0.7um, 200 Pk
Whatman SKU: 6825-2527

Whatman Puradisc Glass Fiber (GF) Syringe Filters, 0.7 µm, 25 mm, 200/Pk - 6825-2527

Whatman maintains in-house specialists who set and verify material specifications separately for its cellulose, glass-fiber, and polymer membrane chemistries, tailoring quality control to how each one behaves in use. Individually packaged and pre-tested, a syringe filter needs no functional check before use the way a shared reusable holder does. Glass fiber sustains high dirt-loading capacity through depth filtration while withstanding high-temperature pre-conditioning up to 500°C and offers broad chemical compatibility. The PP housing sustains efficient flow on viscous samples while keeping sample purity intact through the filtration pass and presses snugly against the membrane during the pass. When chromatographic methods demand particle-free injections, the column stays clean from run to run, protecting method performance and column life.

Technical Specifications

• Inorganic construction suits demanding sample-preparation chemistries
• Biologically inert borosilicate fiber with broad chemical compatibility
• Reduces bioburden and particulate load ahead of sterilizing-grade filtration
• Extends filterable sample volume three to seven times versus unprotected media
• Surface silanol groups attract water molecules for immediate aqueous wetting

Housing Specifications

• Minimal extractable release from the housing supports sensitive analytical work downstream
• Translucent housing wall allows visual confirmation of sample flow during filtration
• Impact-tolerant polypropylene body withstands routine bench handling without damage
• Dilute aqueous acids, bases, and alcohols used in sample prep do not degrade the polypropylene housing

Clarify your routine aqueous samples in a single pass and cut down on juggling multiple filter types at the bench. General-purpose aqueous filtration supports the sample types you handle every day across your water-analysis and general analytical workflows. Start a live chat with our customer support technicians for real-time updates on product availability, lead time, or your order status.

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

Connection Type

Luer-Lok/ Luer Slip

Construction

Glass Microfiber (Binder Free)

Diameter

25mm

Filtration Area

4.91cm²

Flow Rate

Fast

Material

Glass Micro Fiber

Maximum Operating Temperature (°C)

550°C

Membrane Thickness (µm)

420µm

Pack Count

200

Pore Size (µm)

0.7

Prefilter (Yes/No)

No

Sterility

Nonsterile

Sterilization

Autoclavable 500°C

Volume Throughput (ml)

Up to 100ml

Wettability

Hydrophilic

• Pre-filtration - Acts as a robust depth filter that protects downstream membranes, significantly extending final filtration service life.
• Analysis Prep - Ensures reliable clarification in multi-stage filtration stacks, effectively removing gross debris and precipitates safely.
• Crude Oil Prep - Glass fiber removes wax and asphaltene particulates from crude oil samples ahead of elemental and composition analysis.
• Beverage QC Prep - Removes haze-forming particulates from wine, beer, and juice samples ahead of HPLC compositional and quality-release testing.
• Downstream Purification - Reduces turbidity in fermentation broth ahead of capture chromatography, protecting resin binding capacity and column life.
• Air Sampling Extract Prep - Glass fiber removes insoluble particulates from air filter extracts ahead of metals and organic compound analysis.