GVS Filter, Disk, NC, 0.22µm, 100x100mm, 10/PK 1213999

Quantitative ashless filter paper disk designed for critical gravimetric and quantitative analyses. This 70 mm, very-slow filtration disc provides a 2–3 µm particle retention and extended filtration time for analytical precipitates and extremely difficult filtrations. It is acid-hardened and low-ash to minimize contamination and is suitable for use with Büchner funnels and filtration under pressure.

Key Features:

• Diameter: 70 mm
• Filtration rate: Very Slow (filtration time for distilled water: 292 seconds)
• Retention range: 2–3 µm
• Box quantity: 100 discs
• Thickness: 160 µm
• Weight: 100 g (per box)
• Wet bursting strength: 52 kPa; Kind: Disc

Advantages:

• Hardened ashless construction (maximum ash content <0.006%) minimizes contamination of analytical samples.
• Very slow flow and 2–3 µm retention allow reliable recovery and accurate measurement of fine precipitates in gravimetric analysis.
• Enhanced mechanical strength and wet bursting resistance support use in Büchner funnels and filtration under pressure.
• Produced and washed under controlled conditions to ensure consistent purity and reproducible filtration performance.