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 are renowned for their high loading capacity, fast flow rates, and excellent chemical resistance. They are widely used in environmental monitoring, biochemical analysis, and as high-performance separators in battery research.

Key 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 (Ideal 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: Excellent resistance to most solvents and reagents (except HF).