Cellulose nitrate membrane filters offer narrow sub-micron pore size distribution and low extractable levels. Very fine particles can be retained for recovery or microscopic viewing.

• Can withstand autoclaving up to 121 °C with no loss of integrity Low shrinkage during autoclaving, reducing tearing High strength and flexibility prevent tearing during handling, loading and autoclaving

These membrane filters collect even very fine particles on the white membrane surface for colony counting, particle counting and sterility testing of dark samples.

* Sterile

Pharmaceutical, immunological, biomedical tissue culture, and trace analysis applications rely on knowing that filtration preserves the integrity of the original sample. Because Whatman cellulose nitrate membrane filters have a low level of extractables, they are a good choice for sample preparation of critical samples.