Ships From Usa Whatman Sterile Mixed Cellulose Ester Membranes - 47 Mm Wme Mixed Cellulose Ester Membrane Filter With Pad, Sterile, Gridded Black, 0.45 µm - 7153-104 - Priority Shipping [tmQALq7s]

Whatman Sterile Mixed Cellulose Ester Membranes

Whatman Sterile Mixed Cellulose Ester Membranes are designed for precision and reliability in various laboratory applications. These 47 mm WME Mixed Cellulose Ester Membrane Filters with Pad offer a sterile, gridded black surface for enhanced particle detection. Crafted with a 0.45 µm pore size, these filters provide a high degree of internal surface area for increased adsorption of products, making them ideal for microbiological and analytical processes. The black/white grid design ensures excellent contrast, simplifying the identification of particles and colonies, while the non-toxic grids do not inhibit bacterial growth, preserving sample integrity.

Key Product Features

The Whatman Mixed Cellulose Ester Membranes are composed of a blend of cellulose acetate and cellulose nitrate, offering a smoother and more uniform surface than pure nitrocellulose filters. This unique composition provides several advantages, including a higher dirt loading capacity, biologically inert properties, and good thermal stability. The absence of surfactants ensures that samples remain uncontaminated, and the uniform microporous structure of the membrane allows for high flow rates, making the process more efficient. Additionally, these membranes are characterized by a lower cellulose acetate content compared to the WME range, which can be beneficial for certain applications.

Practical Applications and Benefits

The Whatman Sterile Mixed Cellulose Ester Membranes are versatile and suitable for a wide range of microbiological and analytical techniques. Their use in colony counting procedures is particularly advantageous, as the color contrast between the surface and the colonies facilitates the counting process, simplifying the quantitation. The plain or gridded options are designed to cater to both automatic and manual counting procedures. Whatman black mixed cellulose esters are available plain for automatic colony counting applications and gridded to assist in manual counting, offering flexibility for various laboratory needs. These sterile filters are also autoclavable, making them a preferred choice for laboratories that require sterilization for microbiological work.