Nitrocellulose Membrane Filters, 0.22um, 293mm, Nonsterile, 25/Pk
GVS SKU: 1214959

Featuring a hydrophilic mixed cellulose esters (MCE) medium composed of a blend of inert cellulose nitrate and cellulose acetate polymers, this 293mm nitrocellulose membrane disc delivers a 0.22um pore size for fine particulate retention and microbial analysis. The uniform microporous structure provides fast flow rates and high throughput across aqueous filtrations, while the naturally hydrophilic surface wets out readily without compromising sample integrity. Each disc is supplied nonsterile in a pack of 25.

Key Nitrocellulose Membrane Characteristics

• Hydrophilic: Wets out naturally with a noncytotoxic wetting agent, supporting consistent flow and diffusion.
• Uniform microporous structure: Provides fast flow rates and high throughput for dependable, repeatable results.
• Low extractables: Yields extractable levels of less than 4 percent of membrane weight for cleaner analyses.
• Biologically inert composition: Built from inert cellulose nitrate and cellulose acetate polymers suited to clarification and sterilization of aqueous solutions.
• Autoclavable: Withstands autoclaving at 121C for 20 minutes.

Key Construction Characteristics

• Diameter: 293mm disc format for large-area, high-volume filtration.
• Pore size: 0.22um for fine particulate and microbial retention.
• Sterility: Supplied nonsterile.
• Pack: 25 discs per pack.

This membrane maintains reliable, reproducible performance across microbiological and analytical workflows. Its narrow pore distribution and low extractable content help preserve sample integrity from filtration through downstream analysis. Lot-to-lot consistency supports dependable results in routine and validated methods.

Color

White

Diameter

293mm

Grade

Plain

Material

Nitrocellulose (NC)

Membrane Color

White

Pack Count

25

Pore Size (µm)

0.22

Sterility

Nonsterile

Wettability

Hydrophilic

• Sterile Filtration of Aqueous Solutions The 0.22um pore size removes bacteria from aqueous solutions for sterilization and clarification.
• Microbiological Analysis The hydrophilic, biologically inert membrane supports microbial capture and culture-based testing.
• Clarification of Aqueous Solutions The uniform microporous structure efficiently removes fine particulates while maintaining high throughput.
• Particulate-Matter Analysis The 293mm disc provides a large filtration area for capturing and assessing particulates from large sample volumes.
• Gravimetric Analysis Low extractables and ashable composition make the membrane suitable for gravimetric determinations using ashing techniques.
• Industrial Hygiene Sampling The fast-flow MCE medium supports environmental and industrial hygiene sample preparation.