Description
Specifications Table
Product Name – Whatman Grade 3645 Cellulose Filter Paper
Quantity/Pack Size – 105x190MM (Pack of 1000)
Form – Sheets
Grade – 3645
Application – General lab filtration, particle retention, qualitative analysis
Product Overview
Whatman Grade 3645 cellulose filter paper is engineered for demanding laboratory applications requiring consistent particle retention and chemical compatibility. Made from high-purity cellulose fibers, this grade offers a balanced combination of medium retention (4-7 µm) and high wet strength, ensuring durability during filtration processes. The paper’s uniform thickness and smooth surface minimize clogging, making it suitable for both aqueous and organic solvent-based filtrations. Its inherent chemical resistance allows for use with mild acids, alkalis, and common laboratory solvents without compromising structural integrity. The medium flow rate ensures efficient processing while maintaining filtration precision. This grade is particularly valued for its versatility in qualitative analysis, where reliable particle capture and sample clarity are critical. The sheets are pre-cut to standard dimensions (105x190MM) for compatibility with common filtration setups, reducing preparation time. Each pack contains 1000 sheets, providing cost-effective bulk supply for high-throughput laboratories. The filter paper undergoes rigorous quality control to meet international standards, ensuring batch-to-batch consistency for reproducible results.
FAQs
1. What is the particle retention range of Whatman Grade 3645 filter paper?
The particle retention range for Whatman Grade 3645 filter paper is 4-7 micrometers, making it suitable for medium-level filtration tasks.
2. Can this filter paper be used with organic solvents?
Yes, Whatman Grade 3645 is compatible with most organic solvents commonly used in laboratories, though prolonged exposure to strong solvents may affect performance.
3. How does the wet strength of Grade 3645 compare to other Whatman grades?
Grade 3645 offers higher wet strength than standard qualitative grades like 1 or 2, making it more durable during filtration under pressure or with viscous liquids.
4. What is the recommended storage condition for these filter papers?
Store in a cool, dry environment away from direct sunlight and chemical fumes to maintain the paper’s integrity and filtration performance.
5. Are there alternatives to Grade 3645 for finer particle retention?
For finer particle retention, consider Whatman Grade 42 (2.5 µm) or Grade 541 (2-4 µm), though these may have lower flow rates compared to Grade 3645.
