Specifications Table

Product Name – Whatman AE98 Membrane Filter
Quantity/Pack Size – 25MM, 5.0uM (Pack of 100) | 47MM, 5.0uM (Pack of 100) | 50MM, 5.0uM (Pack of 100)
Form – Circular discs
Grade – Cellulose acetate/nitrate mixed esters
Application – General filtration, air monitoring, liquid clarification

Product Overview

The Whatman AE98 Membrane Filter is engineered for reliable particulate retention in laboratory filtration processes. Constructed from a high-quality cellulose acetate/nitrate blend, this filter combines mechanical strength with chemical compatibility, ensuring consistent performance across diverse applications. The 5.0?m pore size provides an optimal balance between flow rate and retention efficiency, making it suitable for both liquid and air filtration tasks. Its uniform porosity and smooth surface minimize particle binding, reducing the risk of sample contamination while maintaining high throughput. The membrane’s inherent hydrophilicity eliminates the need for pre-wetting, streamlining workflow efficiency. Each filter undergoes rigorous quality control to meet strict industry standards, guaranteeing batch-to-batch consistency. The three available diameters (25mm, 47mm, and 50mm) accommodate various filtration setups, from small-scale sample preparation to larger volume processing. The filters’ thermal stability allows for autoclaving when sterile conditions are required, while their low extractable levels ensure minimal interference with analytical results. This versatile filtration solution is particularly valued in environments where precision and reproducibility are critical, offering researchers a dependable tool for their most demanding filtration challenges.

FAQs

1. What is the maximum operating temperature for Whatman AE98 filters?

The filters can withstand continuous operation at temperatures up to 120?C, with short-term exposure possible up to 130?C without compromising structural integrity.

2. Are these filters compatible with organic solvents?

While primarily designed for aqueous solutions, they demonstrate moderate compatibility with alcohols and some polar organic solvents, though prolonged exposure to strong organic solvents may affect performance.

3. How does the flow rate compare to other 5.0?m filters?

The mixed ester composition provides approximately 20-30% higher flow rates compared to equivalent pore size filters made from pure cellulose nitrate, while maintaining similar retention characteristics.

4. What’s the recommended storage method for unused filters?

Store in original packaging at room temperature (15-30?C) in a dry environment, protected from direct sunlight and chemical vapors to maintain optimal performance characteristics.

5. Can these filters be used for sterile filtration applications?

While not validated as sterilizing-grade filters, they can be autoclaved at 121?C for 15 minutes when sterile conditions are required for non-critical applications.