GVS Filter, Disk, NC, 0.45µm, White, 25mm 100/PK 1215263

Quantitative ashless filter paper disc for laboratory gravimetric and analytical filtration. Designed as a slow-flow (Slow) 90 mm circular disc with Grade 44 ashless construction for recovery of fine precipitates and critical quantitative analysis. Primary uses include difficult filtrations and analytical precipitate collection in gravimetric and quantitative laboratory procedures.

Key Features:

• Format: Disc, diameter 90 mm
• Grade: Quantitative, Grade 44 (ashless)
• Flow/Property: Slow filtration
• Retention range: 2–4 µm
• Box quantity: 100 per pack
• Filtration time (distilled water): 292 seconds
• Thickness: 160 µm; Wet bursting strength: 52 kPa

Advantages:

• Very low ash content and ashless construction enable accurate gravimetric analysis and minimize contamination of collected precipitates.
• Slow flow and 2–4 µm retention provide high retention of fine or finely precipitated materials for critical quantitative recovery.
• Hardened/processed manufacture increases mechanical strength for use with Büchner funnels and under moderate vacuum conditions, improving handling during filtration.