Description
Specifications Table
Product Name – Whatman Grade 0903 Cellulose Filter Paper
Quantity/Pack Size – 500 Sheets (450x450MM)
Form – Sheets
Grade – 0903
Application – General lab filtration, qualitative analysis
Product Overview
Whatman Grade 0903 cellulose filter paper is engineered for superior performance in laboratory filtration applications, offering a balanced combination of retention efficiency and flow rate. Made from high-purity cellulose fibers, this grade provides medium particle retention (approximately 6-8 µm), making it suitable for a wide range of qualitative analyses where clarity and consistency are critical. The paper’s uniform thickness and smooth surface ensure even particle distribution, minimizing clogging and maximizing filtration speed. Its high wet strength prevents tearing during handling, even when saturated, while the acid-washed treatment ensures low ash content for cleaner results. The 450x450MM sheet size offers ample surface area for large-volume samples, and the pack of 500 sheets provides cost-effective bulk supply for frequent use. Designed for compatibility with standard filtration setups, this filter paper maintains integrity across various solvents and aqueous solutions, delivering reliable performance in both manual and automated systems. Its neutral pH and minimal extractables further enhance its suitability for sensitive applications where contamination risks must be minimized.
FAQs
1. What is the particle retention range of Whatman Grade 0903 filter paper?
This grade retains particles in the 6-8 µm range, making it ideal for general qualitative filtration where moderate retention is required without sacrificing flow rate.
2. Can this filter paper be used with organic solvents?
Yes, Whatman Grade 0903 is compatible with most organic solvents commonly used in labs, though pre-wetting with the solvent may improve performance for highly viscous liquids.
3. How does the wet strength of this paper compare to other Whatman grades?
The 0903 grade offers higher wet strength than standard qualitative papers like Grade 1, reducing the risk of tearing during filtration of dense or particulate-laden solutions.
4. Is this filter paper pre-sterilized or treated for microbial applications?
No, Grade 0903 is not pre-sterilized. For microbial work, autoclaving or alternative sterilization methods should be applied before use in aseptic procedures.
5. What alternatives exist if I need finer particle retention?
For finer retention, consider Whatman Grade 42 (2.5 µm) or Grade 541 (4-7 µm), though these may have slower flow rates compared to the 0903 grade.
