Description
Specifications Table
Product Name – Whatman Grade 589/2 FF White Ribbon Filter Paper
Quantity/Pack Size – 110MM (Pack of 100), 150MM (Pack of 100)
Form – Circular Sheets
Grade – 589/2 FF
Application – General Lab Filtration, Clarification
Product Overview
Whatman Grade 589/2 FF White Ribbon Filter Paper is a high-performance filtration medium designed for general laboratory applications requiring fast flow rates and high particle retention. Manufactured from pure cellulose fibers, this filter paper undergoes an acid-washing process to minimize extractables, ensuring reliable results in critical filtration tasks. The smooth surface and uniform porosity provide consistent filtration efficiency, making it suitable for routine lab work where clarity and speed are essential. Its white ribbon finish enhances visibility of filtered particles, aiding in process monitoring. The medium retention capacity balances between fine particle capture and flow rate, reducing clogging while maintaining throughput. Compatible with a wide range of solvents and aqueous solutions, this filter paper maintains structural integrity even under moderate pressure differentials. The 110MM and 150MM diameters cater to standard funnel sizes, offering versatility across different setups. Each pack contains 100 sheets, providing ample supply for repeated experiments or batch processing. The acid-washed treatment ensures low ash content (<0.01%), making it particularly useful in applications where residue could interfere with downstream analysis. The filter paper’s consistent thickness (approximately 180 ?m) and basis weight (87 g/m?) contribute to its durability and ease of handling during wet or dry conditions.
FAQs
1. What is the particle retention range for Whatman Grade 589/2 FF filter paper?
This grade typically retains particles in the 2-5 ?m range, offering a balance between fine filtration and flow rate for general lab applications.
2. Can this filter paper be used with organic solvents?
Yes, Whatman Grade 589/2 FF is compatible with most common organic solvents including alcohols, ketones, and aliphatic hydrocarbons, though prolonged exposure to strong acids or bases may affect performance.
3. How does the acid-washing process benefit filtration?
The acid-washing removes most inorganic impurities and reduces extractables, resulting in lower ash content (<0.01%) and minimizing potential interference in sensitive applications.
4. What’s the difference between this and Whatman Grade 1 filter paper?
Grade 589/2 FF offers faster flow rates with slightly coarser retention (2-5 ?m) compared to Grade 1 (11 ?m), making it better suited for applications where speed is prioritized over ultra-fine filtration.
5. How should unused filter papers be stored for long-term use?
Store in original packaging at room temperature (15-30?C) in a dry environment away from direct sunlight and chemical fumes to maintain performance characteristics.
