GVS Filter Paper, Disk, 185mm, Low Ash-Very Fast, Grade 04, 100/PK FP185DXF04QALC01

Quantitative ashless filter paper disc for laboratory filtration and gravimetric analysis. Designed for fast filtration of coarse flocculent and bulky precipitates, the disc is suitable for use in Büchner funnels and filtration under pressure and for recovery of precipitates retained on the filter surface. Typical applications include critical gravimetric and quantitative analyses where low ash content and reliable mechanical strength are required.

Key Features:

• Diameter: 110 mm
• Filtration speed: Fast (filtration time for distilled water: 21 seconds)
• Retention range: 20–25 µm
• Box quantity: 100 discs
• Thickness: 190 µm; Weight: 80 g
• Wet bursting strength: 40 kPa
• Ash content (hardened ashless): ≤ 0.006%

Advantages:

• Very low ash content reduces contamination of analytical precipitates, enabling accurate gravimetric results.
• Hardened texture and enhanced mechanical strength make the discs suitable for Büchner funnel use and filtration under pressure.
• Fast flow rate expedites filtration of coarse or gelatinous precipitates, improving throughput for routine laboratory separations.
• Consistent retention characteristics (20–25 µm) provide reliable separation of coarse flocculent materials.