Description
Specifications Table
Product Name – Whatman Grade 542 Cellulose Filter Paper
Quantity/Pack Size – 5.5CM (Pack of 100), 7CM (Pack of 100), 9CM (Pack of 100), 11CM (Pack of 100), 12.5CM (Pack of 100), 15CM (Pack of 100), 18.5CM (Pack of 100), 24CM (Pack of 100)
Form – Circular sheets
Grade – 542 (medium retention, 8 µm particle retention)
Application – General-purpose filtration, qualitative analysis, gravimetric analysis
Product Overview
Whatman Grade 542 cellulose filter paper is engineered for reliable performance in laboratory filtration applications where medium retention and consistent flow rates are critical. Constructed from high-purity cellulose fibers, this filter paper provides an 8?m particle retention rating, making it ideal for general-purpose filtration tasks. The uniform thickness and smooth surface ensure even particle distribution and minimal fiber shedding, which is essential for accurate qualitative and gravimetric analyses. Its balanced porosity allows for efficient filtration without compromising clarity or flow rate, reducing the risk of clogging during extended use. The filter paper is chemically inert, ensuring compatibility with a wide range of solvents and aqueous solutions. Its consistent quality and standardized manufacturing process guarantee reproducibility in experimental results, a key requirement for research and testing environments. The circular sheets are available in multiple diameters to accommodate various filtration setups, from small-scale bench work to larger-volume applications. Whether used in vacuum filtration or gravity-based systems, Whatman Grade 542 delivers dependable performance, minimizing variability and maximizing efficiency in laboratory workflows.
FAQs
1. What is the particle retention capacity of Whatman Grade 542 filter paper?
This filter paper has a particle retention capacity of 8?m, making it suitable for medium-level filtration tasks.
2. Can this filter paper be used with organic solvents?
Yes, Whatman Grade 542 is chemically inert and compatible with most organic solvents and aqueous solutions.
3. How does the flow rate of Grade 542 compare to other Whatman grades?
Grade 542 offers a balanced flow rate, faster than high-retention grades like 42 but slower than coarse grades like 1.
4. What is the shelf life of this filter paper when stored properly?
When stored in a cool, dry environment away from direct sunlight, the filter paper maintains its performance for up to 5 years.
5. Are these filter papers pre-sterilized or autoclavable?
They are not pre-sterilized but can be autoclaved at 121?C for 15 minutes if sterilization is required.
