GVS Filter Paper, Disk, 70mm, Ashless-Fast, Grade 41, 100/PK FP070DFA41QANC01

Quantitative ashless filter discs designed for laboratory gravimetric and quantitative analysis. These 150 mm, fast‑flow filter papers provide a 20–25 µm particle retention and are intended for critical filtrations, including use with Büchner funnels and filtration under pressure. The paper is produced with acid hardening and extensive washing to deliver very low ash content and enhanced mechanical strength for recovery of precipitates and analytically demanding separations.

Key Features:

• Diameter: 150 mm
• Retention range: 20–25 µm (Fast)
• Box quantity: 100 discs
• Filtration time (distilled water): 21 seconds
• Thickness: 190 µm
• Weight: 80 g
• Wet bursting strength: 40 kPa

Advantages:

• Very low ash content achieved by acid hardening and rigorous washing, minimizing contamination in gravimetric analyses.
• Enhanced mechanical strength and wet bursting resistance for reliable use in Büchner funnels and pressure filtration.
• Fast filtration rate (21 s for distilled water) speeds sample processing while retaining coarse and flocculent precipitates.