Whatman Series Glass Microfiber Filter Paper (Sodium-ion Battery Separator)

Product: Whatman Glass Microfiber Filter Papers (GF Series)
Application: Laboratory Filtration, Electrochemical Separators (Li-ion/Na-ion), Water/Air Analysis, Cell Culture
Product Overview: These binder-free glass microfiber filters have the listed loading capacities, flow rates, and chemical resistance. They are used in environmental monitoring, biochemical analysis, and as separators in battery research.

Specifications by Grade

1. Grade GF/A:
– Description: Fast Filtration, High Loading
– Particle Retention: 1.6 µm
– Filtration Speed (Herzberg): ~62 s
– Air Flow Rate: 4.3 s/100ml/in²
– Thickness: 260 µm
– Basis Weight: 53 g/m²
– Packaging: 100 discs/box (Available diameters: 13 mm to 240 mm, plus large sheets)

2. Grade GF/B:
– Description: Medium to Fast, Very High Loading (High Wet Strength)
– Particle Retention: 1.0 µm
– Filtration Speed (Herzberg): ~195 s
– Air Flow Rate: 12 s/100ml/in²
– Thickness: 675 µm
– Basis Weight: 143 g/m²
– Packaging: 100 discs/box (Available diameters: 21 mm to 150 mm)

3. Grade GF/C:
– Description: Medium to Fast, High Loading (Standard for Water Analysis)
– Particle Retention: 1.2 µm
– Filtration Speed (Herzberg): ~100 s
– Air Flow Rate: 6.7 s/100ml/in²
– Thickness: 260 µm
– Basis Weight: 53 g/m²
– Packaging: 100 discs/box (Available diameters: 21 mm to 125 mm, plus large sheets)

4. Grade GF/D:
– Description: Fast, Super High Loading (For use as Pre-filter or Battery Separator)
– Particle Retention: 2.7 µm
– Filtration Speed (Herzberg): ~41 s
– Air Flow Rate: 2.2 s/100ml/in²
– Thickness: 675 µm
– Basis Weight: 121 g/m²
– Packaging: 100 discs/box (Available diameters: 7 mm to 150 mm, plus large sheets)

5. Grade GF/F:
– Description: Medium to Fast, Very High Loading (Finest Particle Retention 0.7 µm)
– Particle Retention: 0.7 µm
– Filtration Speed (Herzberg): ~325 s
– Air Flow Rate: 19 s/100ml/in²
– Thickness: 420 µm
– Basis Weight: 75 g/m²
– Packaging: 100 discs/box (Available diameters: 21 mm to 142 mm)

Common Features:
– Material: 100% Borosilicate Glass Microfiber
– Binder: Binder-free
– Particle Retention Efficiency: 98%
– Chemical Resistance: resistance to most solvents and reagents (except HF).