Glass Fiber Membrane Disc Filters, 0.5um, 90mm, Nonsterile, 25/Pk
GVS SKU: 1215550

Featuring a hydrophilic borosilicate glass fiber depth medium, these 90mm membrane disc filters provide a 0.5um nominal particle retention rating ideal for high-volume aqueous filtrations and heavily loaded samples. The borosilicate glass fibers are woven into a porous matrix and bonded by an acrylic resin binder, producing a depth filter that reduces media migration and delivers the mechanical strength required for demanding, long-duration filtrations under pressure. As a depth medium, it offers high dirt-holding capacity and fast flow, making it well suited to clarification and prefiltration of challenging samples.

Key Glass Fiber Media Characteristics

• Naturally hydrophilic borosilicate glass fiber structure for rapid wetting and high flow with aqueous samples
• Provides 0.5um nominal particle retention as a depth medium rather than an absolute screen membrane
• High particulate loading capacity, ideal for clarifying or pre-filtering heavily contaminated solutions
• Acrylic resin binder reduces media migration and adds strength for high-volume, long-duration filtrations
• Biologically inert, autoclavable, and highly resistant to oxidizing agents and weak acids

Key Construction Characteristics

• Borosilicate glass fiber depth medium with acrylic resin binder
• 90mm disc diameter sized for standard 90mm filter holders and funnels
• 0.5um nominal pore size rating
• Supplied nonsterile in packs of 25

This glass fiber disc delivers consistent, reliable performance for high-throughput sample preparation while protecting downstream membranes from premature clogging. Its inert borosilicate construction helps preserve sample integrity across aqueous and chemically demanding filtrations. The strong, binder-bonded matrix maintains structural stability under pressure for dependable, repeatable results.

Color

White

Construction

Borosilicate glass fiber depth medium with acrylic resin binder

Diameter

90mm

Material

Glass Fiber (GF)

Pack Count

25

Pore Size (µm)

0.5

Sterility

Nonsterile

Wettability

Hydrophilic

• Prefiltration Traps large particles to extend the life of downstream final membrane filters during heavily loaded filtrations.
• Sample Clarification Provides low-cost clarification of aqueous solutions when used as a standalone depth medium.
• High-Volume Aqueous Filtration Handles high-throughput aqueous filtrations with fast flow and high particulate loading capacity.
• Environmental Sample Prep Clarifies and pre-filters heavily contaminated environmental samples ahead of analysis.
• Oxidizing and Weak Acid Filtration Withstands oxidizing agents and weak acids thanks to its inert borosilicate glass fiber medium.
• Long-Duration Pressure Filtration Maintains strength and structure for extended filtrations carried out under pressure.