Description
Specifications Table
Product Name – Whatman Cellulose Filter Paper Grade 114
Quantity/Pack Size – 9cm (Pack of 100), 12.5cm (Pack of 100), 15cm (Pack of 100), 18.5cm (Pack of 100), 24cm (Pack of 100), 40cm (Pack of 100), 58x58cm (Pack of 100)
Form – Circular sheets
Grade – 114 (Medium retention, high wet strength)
Application – General lab filtration, particle retention, qualitative analysis
Product Overview
Whatman Grade 114 cellulose filter paper is engineered for demanding laboratory applications where medium particle retention and high wet strength are critical. Composed of 100% pure cellulose, this grade offers exceptional chemical resistance, making it ideal for filtration tasks involving aggressive solvents or acidic/alkaline solutions. The medium retention rate (20-25 cm) ensures efficient separation of fine particulates while maintaining fast flow rates, reducing processing time without compromising clarity. Its robust wet strength prevents tearing during prolonged or high-pressure filtration, ensuring reliability in repetitive or automated workflows. The paper undergoes stringent quality control to eliminate extractables, guaranteeing minimal interference with analytical results. Its uniform porosity and consistent thickness provide reproducible performance across batches, a vital feature for standardized protocols. Whether used in gravity or vacuum filtration setups, Grade 114 delivers consistent results with minimal fiber shedding, preserving sample integrity. The natural cellulose composition also makes it biodegradable, aligning with sustainable lab practices. Available in multiple diameters, it adapts seamlessly to various funnel sizes and filtration apparatus, offering versatility for diverse experimental needs. This filter paper is particularly valued in applications requiring a balance between retention efficiency and flow speed, such as clarifying liquids or preparing samples for downstream analysis. Its compatibility with common sterilization methods further extends its utility in aseptic procedures.
FAQs
1. What is the particle retention range for Whatman Grade 114 filter paper?
The particle retention range is approximately 20-25 cm, making it suitable for medium-fine filtration tasks where both clarity and flow rate are important.
2. Can this filter paper be used with organic solvents like acetone or ethanol?
Yes, Grade 114 is chemically resistant to most organic solvents, including acetone, ethanol, and mild acids/bases, though prolonged exposure to highly aggressive solvents may affect performance.
3. How does the wet strength of Grade 114 compare to other Whatman grades?
Grade 114 offers superior wet strength compared to standard qualitative grades (e.g., Grade 1 or 4), making it less prone to tearing during filtration under pressure or when handling viscous samples.
4. Is this filter paper pre-sterilized or autoclavable?
The paper is not pre-sterilized but can be autoclaved at 121C for 15 minutes without significant degradation, provided it is dry before sterilization to prevent fiber weakening.
5. What alternatives exist if I need finer or coarser filtration?
For finer retention, consider Whatman? Grade 41 (5-10 cm) or Grade 42 (2.5 cm). For coarser filtration, Grade 1 (11 cm) or Grade 595 (4-7 cm) may be suitable, depending on flow rate requirements.
