Whatman™ Cellulose Nitrate Membranes

Supplier: Whatman products (Cytiva)
Whatman™
7184-005 7184-014 7181-004 7190-002 10401312 10401314 10401312 7186-004 7184-001 7191-014 10401121 7188-003 7181-002 7193-004 10402012 7188-004 7190-002 10401126 7182-004 10400206 7190-004 10402014 7182-001 10401114 7191-005 10401118 10401106 7182-001 7195-009 7182-009 10401118 7184-002 7188-002 7182-014 10400212 10400012 7188-002 7188-003 10402014 7182-014 7181-004 10401106 7191-005 10401121 7184-004 10400206 10400114 10400012 10400112 7182-002 7184-004 7182-009 7195-004 10400112 7186-004 7195-009 7188-009 7190-004 10400106 10400014 7195-004 7193-002 7188-004 7188-009 7195-002 7195-002 7182-002 10400014 7182-004 7184-009 10401112 10401314 10405079 7193-004 10405079 10401114 7184-014 10400106 7184-001 7181-002 7193-002 10400214 10400114 10402012 10401170 10401126 10400212 7184-009 10400214 10401112 7191-014 7184-005 7184-002
28454-097BX 267.9 USD
CA11013-034 28454-097 28454-053 89014-304 CA11013-470 28454-093 28159-555 74300-256 CA28454-027 10035-692 10035-694 CA11014-002 10035-690 10035-534 10035-536 CA11013-904 CA11013-628 28297-778 28152-834 10035-538 CA11013-884 CA11013-960 28152-832 28297-774 CA28159-570 10034-956 10034-874 CA74300-256 CA28454-079 11008-546 28454-027 CA11012-716 10034-904 CA11014-034 CA11012-718 10034-902 10035-546 10147-932 10035-548 10035-542 10035-544 CA11013-636 28297-802 28152-825 28152-824 CA11013-576 28297-764 10147-930 CA28159-547 10034-900 CA28454-084 28159-570 CA28297-774 11008-540 CA28152-832 CA28152-834 CA11012-734 CA28297-778 CA11012-726 CA11008-588 28454-079 CA28454-089 CA11008-546 CA28454-042 CA10147-932 CA10147-930 10147-928 10147-926 CA28152-825 28159-547 CA28297-802 CA11013-622 CA11013-468 CA28159-555 CA11013-224 CA11013-222 28454-042 CA89014-304 CA11013-582 CA28454-093 10034-898 28454-084 10034-896 CA28297-764 10034-930 28159-585 CA28152-824 CA11008-540 CA10147-928 CA28454-053 CA28454-097 28454-089 CA10147-926
Whatman™ Cellulose Nitrate Membranes
Filters Membrane Filters
Cellulose nitrate membranes, circles, plain. Recommended for the majority of routine applications, this membrane is manufactured under strictly controlled conditions.

  • Narrow pore size distribution for improved surface capture and analysis
  • Low levels of extractables to ensure sample integrity

The user will benefit from the performance improvements that are now available in Whatman membrane filters, including very narrow pore size distribution and low levels of extractables. 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.

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.

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.

Membrane filters are normally autoclaved at 121 °C without loss of integrity. Cellulose nitrate membranes are supplied as circles, sheets, or reels. 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.

This is the standard membrane filter for the majority of laboratory applications involving particles and cells in the range of 0.1 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.
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