GVS Filter Paper, Disk, 70mm, Ashless-Slow, Grade 44, 100/PK FP070DSL44QANC01

Quantitative ashless filter paper disc designed for slow, high-retention filtrations in analytical laboratories. It provides very slow flow and high retention for critical gravimetric and quantitative analysis, and is suitable for use with Büchner funnels and filtration under pressure. Typical applications include extremely difficult filtrations and recovery of fine analytical precipitates such as barium sulphate and finely precipitated calcium carbonate.

Key Features:

• Diameter: 150 mm
• Grade: Quantitative (Ashless, Slow)
• Retention range: 2–4 µm
• Filtration time (distilled water): 292 seconds
• Box quantity: 100 discs
• Thickness: 160 µm
• Wet bursting strength: 52 kPa

Advantages:

• Very slow flow and high retention optimized for critical gravimetric and quantitative analyses
• Hardened, ashless composition minimizes ash/contaminants, supporting accurate analytical results
• Enhanced mechanical strength suitable for Büchner funnel use and filtration under pressure
• Designed for recovery of fine precipitates and extremely difficult filtrations