Description
Specifications Table
Product Name – Whatman Grade 1 Cellulose Filter Paper
Quantity/Pack Size – 1.5CM (Pack of 500), 2.0CM (Pack of 400), 2.5CM (Pack of 400), 3.0CM (Pack of 400), 3.2CM (Pack of 100), 4.25CM (Pack of 100), 4.5CM (Pack of 100), 4.7CM (Pack of 100), 5.5CM (Pack of 100), 7.0CM (Pack of 100), 8.2CM (Pack of 100), 8.5CM (Pack of 100), 9.0CM (Pack of 100), 11.0CM (Pack of 100), 12.5CM (Pack of 100), 15.0CM (Pack of 100), 18.5CM (Pack of 100), 24.0CM (Pack of 100), 27.0CM (Pack of 100), 32.0CM (Pack of 100), 2.5CM (Pack of 100), 3.0CM (Pack of 100), 38.5CM (Pack of 100), 40.0CM (Pack of 100), 50.0CM (Pack of 100), 1.0CM (Pack of 500), 2.6×3.1CM (Pack of 1000), 7.5x10CM (Pack of 500), 46x57CM (Pack of 100), 46x57CM (Pack of 500)
Form – Circular & Rectangular Sheets
Grade – Grade 1 (Medium Retention)
Application – General Lab Filtration, Qualitative Analysis
Product Overview
Whatman Grade 1 cellulose filter paper is a versatile, acid-washed medium designed for general laboratory filtration tasks requiring moderate particle retention. With a particle retention rate of 11µm, it balances flow rate and filtration efficiency, making it ideal for routine qualitative analysis. The high-purity cellulose composition ensures minimal extractables, reducing interference in sensitive applications. Its uniform thickness and porosity provide consistent results, while the acid-washing process enhances chemical resistance. Available in a wide range of diameters and sheet sizes, this filter paper adapts to various filtration setups, from small-scale experiments to bulk processing. The medium retention grade effectively captures fine precipitates while maintaining a steady flow rate, optimizing workflow efficiency. Its compatibility with most aqueous and organic solvents expands its utility across diverse lab protocols. The filter paper’s smooth surface minimizes particle shedding, preserving sample integrity. Whether used in gravity or vacuum filtration, Whatman Grade 1 delivers reliable performance for standard lab procedures. The pack sizes cater to both low-volume and high-throughput requirements, ensuring cost-effective solutions for different operational scales.
FAQs
1. What is the particle retention capacity of Whatman Grade 1 filter paper?
Whatman Grade 1 filter paper has a particle retention capacity of 11µm, making it suitable for medium-level filtration tasks.
2. Can this filter paper be used with organic solvents?
Yes, it is compatible with most aqueous and organic solvents, but always verify chemical compatibility for specific applications.
3. How does the acid-washing process benefit filtration?
The acid-washing process removes impurities and enhances chemical resistance, improving filtration reliability.
4. What is the difference between Grade 1 and other Whatman grades?
Grade 1 offers medium retention (11µm), while other grades vary in retention levels and flow rates for specific needs.
5. Is this filter paper suitable for vacuum filtration?
Yes, it performs well in both gravity and vacuum filtration setups, maintaining structural integrity under pressure.


