Description
Specifications Table
Product Name – Whatman Grade 52 Cellulose Filter Paper
Quantity/Pack Size – 9CM (Pack of 100), 11CM (Pack of 100), 12.5CM (Pack of 100), 15CM (Pack of 100), 24CM (Pack of 100)
Form – Circular sheets
Grade – Medium retention (7?m)
Application – General lab filtration, qualitative analysis
Product Overview
Whatman Grade 52 cellulose filter paper is engineered for general laboratory filtration tasks requiring medium particle retention (7?m). Crafted from 100% pure cotton linters, this acid-washed filter paper delivers consistent performance with high wet strength, making it ideal for demanding applications. The uniform porosity ensures reliable flow rates without compromising filtration efficiency. Its natural cellulose composition provides excellent chemical compatibility with most organic and inorganic solutions, while the smooth surface minimizes fiber shedding. The paper?s inherent purity (low ash content <0.06%) prevents sample contamination, ensuring accurate results. Available in multiple diameters (9cm to 24cm), it accommodates various funnel sizes and filtration volumes. The medium-speed filtration balances throughput and particle capture, reducing clogging in routine lab procedures. Its compatibility with standard sterilization methods (autoclaving) extends its utility in aseptic workflows. The consistent thickness (180?m) and basis weight (87g/m?) provide structural integrity even under vacuum filtration. This filter paper is a staple in analytical labs for its reproducibility and cost-effectiveness in qualitative analysis.
FAQs
1. What is the particle retention size for Whatman Grade 52 filter paper?
The particle retention size is 7 micrometers, making it suitable for medium-fine filtration tasks.
2. Can this filter paper be used with strong acids or bases?
Yes, it is acid-washed and chemically stable with most common lab reagents, though prolonged exposure to concentrated acids may affect performance.
3. How does the flow rate compare to other Whatman grades?
Grade 52 offers a moderate flow rate?faster than Grade 42 but slower than Grade 1, balancing speed and retention.
4. Is this filter paper pre-sterilized?
No, it is not pre-sterilized but can be autoclaved at 121?C for sterilization if required.
5. What alternatives exist for finer particle retention?
For finer filtration, consider Whatman Grade 42 (2.5?m) or Grade 40 (8?m with higher wet strength).
