Cytiva Whatman™ Type WCN Cellulose Nitrate Membranes

Description

• Recommended for majority of routine applications, this membrane is manufactured under strictly controlled conditions
• Whatman™ Type WCN Cellulose Nitrate Membranes narrow pore size distribution for improved surface capture and analysis
• Higher strength and flexibility - Most membranes are inherently brittle and difficult to handle; it is not uncommon for filters to be damaged during loading into holders or while in use
• Whatman cellulose nitrate membrane filters have a noticeably improved flexibility and are made to tolerate abuse during handling, loading, and autoclaving without sacrificing integrity
• These membranes are among the strongest of their type available, as measured and compared by burst pressure tests
• Low extractable levels - The level of extractables in membrane filters has become more important with advances in filtration or adsorption techniques
• In particular, pharmaceutical, immunological, and biomedical tissue culture and trace analysis applications can be adversely affected by high extractable levels
• Whatman cellulose nitrate membrane filters have a low level of extractables, generally below that of other membranes of a similar type
• Narrow pore size distribution - One of the major features of Whatman membrane filters is the narrow distribution of pore sizes
• The rated pore size of these membranes is closely controlled due to the advanced manufacturing and control system
• Additionally, the batch-to-batch variation is minimized providing more consistent laboratory results
• Increased temperature stability - Membrane filters are normally autoclaved at 121°C without loss of integrity
• Cellulose nitrate membranes are supplied as circles, sheets, or reels
• Reduced shrinkage - Excessive shrinkage can cause problems during autoclaving and is often the cause of membranes tearing in their holders after autoclaving
• It may also cause a reduction in flow rate and total throughput
• Whatman membranes exhibit a low shrinkage during autoclaving
• White plain filters - This is the standard membrane filter for the majority of laboratory applications involving particles and cells in the range of 0.1 μm to 12.0 μm
• The residue after filtration is found to be almost completely on the surface of the membrane and allows physical recovery of deposits and microscopic examination.