Specifications Table

Product Name – Whatman WME BL GRST Membrane Filter
Quantity/Pack Size – 100 filters
Diameter – 47mm
Pore Size – 0.45µm
Form – Membrane disc
Grade – WME (Mixed Cellulose Esters)
Color – Black gridded
Application – Sterile filtration, particle analysis, microbiology

Product Overview

The Whatman WME BL GRST membrane filter is engineered for high-performance filtration applications in laboratory settings. Constructed from mixed cellulose esters, this filter combines durability with chemical compatibility, making it ideal for demanding filtration tasks. The 0.45µm pore size ensures efficient retention of microorganisms and fine particles while maintaining optimal flow rates. Its black gridded surface enhances contrast for particle counting and microscopic analysis, improving accuracy in quantitative applications. The hydrophilic nature of the membrane allows for rapid wetting and consistent filtration performance. This filter is compatible with a wide range of aqueous and mild organic solutions, ensuring versatility across different laboratory protocols. The 47mm diameter fits standard filtration apparatus, making it a practical choice for routine lab work. Each pack contains 100 individually wrapped filters to maintain sterility and prevent contamination during storage and handling. The Whatman WME BL GRST membrane filter delivers reliable results for researchers requiring precision in their filtration processes.

FAQs

1. What is the material composition of the Whatman WME BL GRST membrane filter?

The membrane is made from mixed cellulose esters, providing a balance of strength and chemical resistance for various filtration applications.

2. Can this filter be used with organic solvents?

It is compatible with mild organic solvents, but always verify chemical compatibility for specific applications to avoid membrane degradation.

3. How should these filters be stored to maintain sterility?

Store in a cool, dry place in their original packaging until use to prevent contamination and maintain filter integrity.

4. What is the purpose of the black grid on the filter?

The black grid improves visibility of particles during microscopic examination, aiding in accurate counting and analysis.

5. Are these filters autoclavable?

These filters are not recommended for autoclaving, as high temperatures may damage the membrane structure.