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Thumbnail Filmstrip of Glass Fiber Filter Discs, 1.2um Nominal Retention, 55mm, Binder-Free, Nonsterile, 100/Pk Images
Featuring a binder-free borosilicate glass microfiber depth medium, these 55mm filter discs deliver a 1.2um nominal particle retention with a media thickness of approximately 0.26mm (260um). The hydrophilic, free-draining matrix traps fine particles throughout its depth rather than across a single screen plane, providing high dirt-holding capacity and fast flow for heavily loaded samples. The binder-free construction avoids leachable extractables, making the medium well suited to gravimetric analysis and solvent filtration where sample purity is critical.
Key Glass Fiber Media Characteristics
- Naturally hydrophilic borosilicate glass microfiber wets out readily with aqueous samples and requires no prewetting.
- Depth structure provides high particulate loading capacity and low filtration resistance for fast, sustained flow.
- Binder-free composition eliminates binder extractables, supporting clean gravimetric and analytical determinations.
- Biologically inert and highly resistant to oxidizing agents and weak acids for broad sample compatibility.
- Withstands high temperatures, allowing use in applications that demand thermal stability.
Key Construction Characteristics
- Circular disc format, 55mm diameter, sized for standard filter holders and funnels.
- Nominal particle retention of 1.2um with a media thickness of approximately 0.26mm.
- Supplied nonsterile in a convenient pack of 100 discs.
The depth-loading glass fiber matrix maintains consistent flow even as particulate accumulates, protecting downstream membranes and preserving filtrate clarity. Its binder-free borosilicate composition supports reliable, repeatable results across demanding clarification and gravimetric workflows.
- Color
- White
- Diameter
- 55mm
- Grade
- FC
- Material
- Glass Fiber (GF)
- Membrane Thickness (µm)
- 260
- Pack Count
- 100
- Pore Size (µm)
- 1.2
- Prefilter (Yes/No)
- Yes
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Prefiltration of Loaded Samples The high dirt-holding depth medium clarifies heavily particulate-laden samples and extends the life of downstream membranes.
- Gravimetric Analysis The binder-free borosilicate composition minimizes extractables, supporting accurate weight-based determinations.
- Suspended Solids Analysis Fine 1.2um nominal retention captures suspended solids in water and industrial wastewater samples.
- Environmental Sample Preparation Suited to water and air pollution monitoring where fast flow and high loading capacity are required.
- Aqueous Sample Clarification The naturally hydrophilic medium clarifies aqueous solutions for low-cost, reliable sample cleanup.
- General Solvent Filtration Chemically resistant glass fiber handles solvent filtration without binder leaching into the filtrate.