Description
Specifications Table
Product Name – Whatman Grade 520A FF Cellulose Filter Paper
Quantity/Pack Size – 240MM (Pack of 100), 500MM (Pack of 100), 450MM (Pack of 100)
Form – Circular Sheets
Grade – 520A (Fast Flow)
Application – General Lab Filtration, Medium Retention
Product Overview
Whatman Grade 520A FF is a premium cellulose filter paper designed for fast and efficient filtration in laboratory settings. Engineered with a medium retention rate, it balances flow speed and particle capture, making it suitable for a wide range of applications. The high-purity cellulose composition ensures minimal extractables, reducing the risk of sample contamination. Its fast flow rate minimizes filtration time without compromising on clarity, while the robust structure resists tearing even under moderate pressure. The paper is chemically resistant to most acids and solvents, ensuring compatibility with diverse sample types. Available in multiple diameters (240MM, 450MM, and 500MM), it accommodates various funnel sizes for scalability in experiments. The uniform thickness and smooth surface further enhance filtration consistency, reducing clogging and ensuring reproducible results. Whether used in qualitative analysis or routine sample preparation, this filter paper delivers reliability and precision, making it a staple in research and educational labs.
FAQs
1. What is the particle retention capacity of Whatman Grade 520A FF?
This grade retains particles down to approximately 2.5 microns, balancing flow rate and filtration efficiency for general lab use.
2. Can this filter paper be used with organic solvents?
Yes, it is compatible with most organic solvents and mild acids, though prolonged exposure to strong acids may degrade the cellulose over time.
3. How does the flow rate compare to other Whatman grades?
The 520A FF offers a faster flow rate than standard qualitative papers like Grade 1 but slower than highly porous grades such as 541, making it ideal for medium-speed applications.
4. Is pre-washing required before use?
Pre-washing is not mandatory but recommended for critical applications to remove potential trace contaminants from the manufacturing process.
5. What storage conditions are ideal for maintaining quality?
Store in a cool, dry environment away from direct sunlight and chemical fumes to preserve the paper?s integrity and filtration performance.
