GF/B Glass Fiber Battery Separator Base Film 675μm, 25 mm Diameter, 100 Sheets
Product Overview
Binder-free glass fiber separator sheet supplied as GF/B‑1821‑025(diameter 2.5cm)100 sheets. The source data describes filtration performance and battery-separator applications.
Product Details
| Product name | GF/B Glass Fiber Battery Separator Base Film 675μm, 25 mm Diameter, 100 Sheets |
| Source specification | GF/B‑1821‑025(diameter 2.5cm)100 sheets |
| Process / coating side | Uncoated; no coating specified |
| Material | Glass fiber filter paper GF/B |
| Diameter | 25 mm |
| Pack quantity | 100 sheets |
| Pore size | 1.0 μm |
| Thickness | 675 μm |
| Working temperature | <500 °C |
| Filtration speed | 195 Herzberg (sec) |
| Air flow | 12 Gurley (sec) |
| Basis weight | 143 g/m² |
| Retention efficiency | >99.997% |
Additional Information
Binder-free material with good fine-particle retention, fast flow, and high loading capacity. GF/B is approximately three times thicker than GF/A, with higher wet strength, good small-particle retention, high liquid absorption, and use in hot filtration of turbid samples or organic solvents, diagnostic media, and battery separators.
Important Note
Note: Slight variations may occur between different production lots of the battery separator. The performance indicators are guaranteed to comply with our product specifications.
Related Products
| Research Need | Related Product | Best For |
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| Compare nearby specifications | GF/A Glass Fiber Battery Separator Base Film 260μm, 25 mm Diameter, 100 Sheets | Same Glass fiber separator family for direct specification comparison. |
| Review same-family format | Glass Fiber Battery Separator Base Film 290μm, 120 mm x 100 m | Same Glass fiber separator family for direct specification comparison. |
| Check alternate thickness | Glass Fiber Battery Separator Base Film 290μm, 100 mm x 100 m | Same Glass fiber separator family for direct specification comparison. |
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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How does the 675 µm thickness and 121 g/m² mass density of the Atomfair glass fiber membrane affect electrolyte wetting and ionic transport in zinc-ion button cells?
The 675 µm thickness and 121 g/m² mass density provide high porosity and mechanical integrity, promoting rapid electrolyte wetting and uniform ion flux. This is supported by the air flow rate of 2.2 s/100ml/in², indicating excellent permeability essential for stable zinc-ion battery cycling.
Can the Atomfair glass fiber membrane be used interchangeably in lithium, sodium, zinc, and magnesium-ion CR20XX button cells without altering the electrolyte formulation?
Yes, the membrane serves as a reliable separator for lithium, sodium, zinc, and magnesium-ion battery systems, enabling cross-system material comparison experiments. The Whatman glass fiber, compliant with ISO 18782 laboratory filter material standards, ensures chemical inertness and mechanical stability across a range of electrolytes without requiring surface modifications.
What are the recommended handling and storage conditions to preserve the integrity of the pre-cut glass fiber membranes?
Membranes should be stored in their original packaging in a dry, clean environment at room temperature to avoid moisture absorption and contamination. The packaging meets international shipping standards and the membranes are ready-to-use, with dimensional accuracy conforming to ISO 286 tolerances, ensuring they can be directly handled with standard tweezers during CR20XX button cell assembly without risk of tearing.
This pre-cut Whatman glass fiber membrane provides consistent porosity and air permeability essential for reproducible button cell testing across lithium, sodium, zinc, and magnesium-ion systems, but its application is confined to CR20XX format with only two diameter options.
Positive
- Broad battery system compatibility: Serves as a reliable separator component for lithium, sodium, zinc, and magnesium-ion battery systems, enabling cross-system material performance comparison experiments.
- Pre-cut dimensions for CR20XX assembly: Ready-to-use design eliminates on-site cutting and trimming, improving assembly efficiency and reducing variability in button cell testing.
Trade-offs
- Limited to CR20XX button cell format: Exclusively engineered for CR20XX series button batteries, not suitable for pouch, cylindrical, or other cell formats without modification.
- Only two diameter options available: Supports only 16mm and 19mm diameters, which may not accommodate all custom or non-standard button cell configurations.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
