Description
Specifications Table
Product Name – Whatman ME25/31 ST Membrane Filter
Quantity/Pack Size – 47MM, 0.45uM (Pack of 100), 47MM, 0.45uM (Pack of 1000), 50MM, 0.45uM (Pack of 100)
Form – Membrane Filter
Grade – Mixed Cellulose Esters (MCE)
Application – Sterile filtration, particle analysis, microbiological assays
Product Overview
The Whatman ME25/31 ST membrane filter is engineered for precision in laboratory filtration applications. Constructed from high-purity mixed cellulose esters (MCE), this filter delivers consistent performance with a 0.45?m pore size, making it suitable for a wide range of filtration needs. Its hydrophilic nature ensures rapid wetting and even flow distribution, minimizing sample loss and ensuring reliable results. The membrane?s smooth surface and uniform structure provide high particle retention efficiency, while its mechanical strength allows for easy handling and processing. Compatible with most aqueous and mild organic solutions, this filter is widely used in sterile filtration, particle analysis, and microbiological assays. The Whatman ME25/31 ST is designed to meet stringent quality standards, offering low extractables and minimal background interference, which is critical for sensitive analytical procedures. Whether used in research, quality control, or routine lab work, this membrane filter provides the durability and consistency required for accurate and reproducible results.
FAQs
1. What is the pore size of the Whatman ME25/31 ST membrane filter?
The Whatman ME25/31 ST membrane filter has a pore size of 0.45 micrometers, which is ideal for general filtration applications requiring sterile conditions.
2. Is this membrane filter compatible with organic solvents?
This filter is compatible with mild organic solvents and aqueous solutions, but it is recommended to check compatibility for specific solvents before use.
3. What material is the Whatman ME25/31 ST membrane filter made of?
The membrane is made of mixed cellulose esters (MCE), which provides a balance of strength, chemical compatibility, and filtration efficiency.
4. Can this filter be autoclaved for sterilization?
Yes, the Whatman ME25/31 ST membrane filter can be autoclaved, making it suitable for applications requiring sterile conditions.
5. What are the available diameters for this filter?
The Whatman ME25/31 ST membrane filter is available in 47MM and 50MM diameters, with different pack sizes to suit various lab requirements.



