Description
Specifications Table
Product Name – Whatman Grade 0905 Cellulose Filter Paper
Quantity/Pack Size – 580x580MM (Pack of 500)
Form – Sheets
Grade – 0905 (Medium Speed, High Wet Strength)
Application – General lab filtration, gravimetric analysis, air monitoring
Product Overview
Whatman Grade 0905 cellulose filter paper is engineered for reliable medium-speed filtration in demanding laboratory environments. Composed of 100% pure cellulose fibers, this grade delivers exceptional wet strength and chemical resistance, making it ideal for applications requiring durability without compromising flow rates. The 0905 grade features a nominal particle retention of 2.5µm, balancing efficient filtration with optimal throughput. Its uniform porosity ensures consistent results across repetitive procedures, while the high alpha-cellulose content (98%+) minimizes extractables that could interfere with sensitive analyses. The paper’s smooth surface reduces fiber shedding, preserving sample integrity during critical separations. Unlike faster grades, 0905 maintains structural integrity even when wet, preventing tears during vacuum filtration or prolonged use. Its neutral pH and absence of binders or additives make it compatible with a wide range of solvents and aqueous solutions. The 580x580mm sheet size provides ample surface area for large-volume filtrations or multiple simultaneous tests. Whether used in qualitative analysis, particulate collection, or as a pre-filter for finer membranes, this grade delivers reproducible performance batch after batch.
FAQs
1. What is the particle retention capacity of Whatman 0905 filter paper?
The nominal particle retention for Grade 0905 is approximately 2.5µm, making it suitable for medium-fine particulate separation.
2. Can this filter paper be autoclaved before use?
Yes, Whatman 0905 can be autoclaved at 121°C for 15 minutes without significant degradation of its filtration properties.
3. How does Grade 0905 compare to Grade 1 in terms of flow rate?
Grade 0905 offers a slower flow rate than Grade 1 (11µm retention) but provides finer particle retention and greater wet strength for more demanding applications.
4. What is the ash content of this filter paper?
The ash content for Whatman 0905 is typically less than 0.06%, ensuring minimal residue interference in analytical procedures.
5. Is this grade compatible with organic solvents like acetone or methanol?
Grade 0905 maintains its structural integrity with most common organic solvents, though prolonged exposure to strong acids or bases may affect performance.
