Description
Specifications Table
Product Name – Whatman Grade 0790FF Cellulose Filter Paper
Quantity/Pack Size – 150MM (Pack of 100), 185MM (Pack of 100)
Form – Circular sheets
Grade – 0790FF (Medium retention, fast flow)
Application – General lab filtration, qualitative analysis, particle retention
Product Overview
Whatman Grade 0790FF is a high-performance cellulose filter paper engineered for reliable laboratory filtration. Constructed from 100% pure cellulose fibers, this grade delivers a balanced combination of medium particle retention and fast flow rates, making it suitable for a wide range of filtration tasks. The 0790FF grade features a smooth surface with consistent porosity, ensuring uniform filtration without clogging. Its chemical compatibility extends to most organic solvents and weak acids/bases, while the ash content remains below 0.06% for minimal interference in analytical procedures. The paper’s wet strength is enhanced through a proprietary treatment process, maintaining structural integrity even under prolonged filtration. Each sheet undergoes rigorous quality control to meet Whatman’s exacting standards for thickness (180?m) and weight (87 g/m?). The natural white color provides excellent contrast for visual inspection of filtrates. This grade is particularly valued for its ability to handle moderate particle loads while maintaining flow efficiency, reducing processing times in routine lab workflows.
FAQs
1. What is the particle retention capacity of Whatman 0790FF filter paper?
The 0790FF grade typically retains particles larger than 8-12 microns, making it suitable for medium-fine filtration applications where both flow rate and particle capture are important.
2. Can this filter paper be used with organic solvents?
Yes, Whatman 0790FF demonstrates good chemical resistance to most organic solvents including alcohols, ketones, and aliphatic hydrocarbons, though prolonged exposure to strong acids or oxidizing agents may affect performance.
3. How does the flow rate compare to other Whatman grades?
Grade 0790FF offers faster flow rates than qualitative grades like 1 or 2 but slower than coarse filtration grades like 4. It’s optimized for applications where moderate retention and reasonable flow speed are both required.
4. What’s the recommended storage condition for these filter papers?
Store in original packaging at room temperature (15-30°C) with relative humidity below 60%. Keep away from direct sunlight and chemical vapors to maintain filtration properties.
5. Are there any alternatives for finer particle filtration?
For finer particle retention, consider Whatman Grade 42 (2.5 μm) or Grade 541 (20-25 μm), depending on your specific filtration requirements and flow rate needs.
