Description
Specifications Table
Product Name – Whatman Grade 4 Pyramid Fold Filter Paper
Quantity/Pack Size – 110MM (Pack of 1000), 125MM (Pack of 100), 125MM (Pack of 1000)
Form – Pyramid-folded sheets
Grade – Grade 4
Application – General lab filtration, qualitative analysis
Product Overview
Whatman Grade 4 Pyramid Fold Filter Paper is engineered for reliable and efficient filtration in laboratory settings. Known for its medium flow rate and high wet strength, this filter paper is designed to handle a wide range of particulate retention without compromising on speed or durability. The pyramid-fold design maximizes surface area, ensuring optimal filtration performance and reducing clogging during use. Made from high-purity cellulose, it maintains chemical compatibility with most solvents and aqueous solutions, making it a versatile choice for various filtration tasks. The consistent quality and uniformity of Whatman Grade 4 ensure reproducible results, which is critical for accurate qualitative analysis. Whether used in routine lab work or specialized applications, this filter paper delivers dependable performance, minimizing the risk of contamination or sample loss. Its robust construction also allows for easy handling, reducing the likelihood of tearing during wet or dry procedures. With a balance of retention efficiency and flow rate, it is particularly suited for applications where moderate particle retention is required without sacrificing filtration speed.
FAQs
1. What is the particle retention capacity of Whatman Grade 4 filter paper?
Whatman Grade 4 filter paper has a particle retention capacity of approximately 20-25 microns, making it suitable for general filtration tasks where moderate retention is needed.
2. Can this filter paper be used with organic solvents?
Yes, Whatman Grade 4 filter paper is compatible with most organic solvents, including alcohols, ketones, and hydrocarbons, ensuring versatility in various lab applications.
3. How does the pyramid-fold design improve filtration efficiency?
The pyramid-fold design increases the effective surface area of the filter paper, allowing for faster filtration rates and reducing the likelihood of clogging during use.
4. What is the difference between Whatman Grade 4 and other grades like Grade 1?
Whatman Grade 4 has a coarser particle retention (20-25 microns) compared to Grade 1 (11 microns), making it faster-flowing but less suited for fine particulate filtration.
5. How should this filter paper be stored to maintain its quality?
Store the filter paper in a cool, dry place, away from direct sunlight and moisture, to prevent degradation or contamination before use.
