Binderless Glass Microfiber Filter, 90mm Diameter, AGF (0.7um) 20 /Pk SKU: SF17470

Glass Fiber (GF) Membrane Filters - SF17470

Precision-manufactured hydrophobic membrane with a verified 0.7 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Precision-manufactured hydrophobic membrane with a verified 0.7 pore structure delivers consistent retention across the full operating range. Together, each membrane disc reflects a manufacturing standard where retention characteristics, physical integrity, and dimensional accuracy are verified before release.

Material Specifications

• Glass Fiber (GF) media functions as a depth filter, capturing particulates throughout the matrix rather than solely at the surface.
• Temperature rating of 200°C provides the thermal headroom required for warm sample processing, heated media preparation, and elevated-temperature analytical methods.
• Biologically inert and broadly compatible, glass fiber filters deliver high dirt-loading capacity for samples with heavy particulate burdens.
• Water-repellent membrane surface sustains airflow in venting applications while providing a defined barrier against liquid passage.
• Binder-free grades minimize background contamination for applications requiring low blank values in gravimetric or chemical analysis.

Microbial enumeration methods require complete retention at rated pore size and a growth-supporting surface. The membrane specifications above confirm both requirements for your culture-based workflows. The depth filtration mechanism of glass fiber media captures particles throughout the full thickness of the matrix, giving you dramatically higher dirt-holding capacity than surface-capture membranes of equivalent retention rating. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

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

Bubble Point (psi)

≥5.8 psi (water, 25°C)

Color

White

Diameter

90mm

Extractables

Very Low

Filtration Area

63.62cm²

Flow Rate

≥0.6 mL/min/cm²

Grid (Yes/No)

No

Material

Glass Fiber (GF)

Maximum Operating Temperature (°C)

200°C

Membrane Thickness (µm)

320-520um

Pack Count

20

pH Range

1-14pH

Pore Size (µm)

0.7

Sterility

Nonsterile

Sterilization

Autoclave, Dry Heat

Weight

0.27

Wettability

Hydrophobic

• Soil Analysis Extraction - Clarifies soil slurries for nutrient testing, resisting clogging from fine clay particles that block membrane pores.
• Clinical Sample Wicking - Used as the absorbent pad in lateral flow devices to drive the sample across the test line via capillary action.
• TSS Water Analysis - The standard filter for Total Suspended Solids testing, capable of withstanding the high heat of ignition steps.
• DNA Purification Spin - Packed into spin columns to bind nucleic acids in high-salt buffers, allowing impurities to be washed away easily.
• Wastewater Pre-filter - Handles the heavy sludge load of influent water samples, protecting the final analytical membrane from instant blocking.
• Pre-filtration Clarification - High dirt-holding capacity effectively removes coarse particulate matter to prevent downstream membrane fouling.