Non-Sterile Membrane Filters
Non-sterile membrane filters are made of cellulose nitrate, also known as mixed cellulose ester, cellulose acetate, or regenerated cellulose. They can be used for colony counting, particle testing, and microscopy. Choose between gridded or non-gridded membranes, with or without hydrophobic edges.
- Categories: Microbiology | Microbiological Control |
Non-sterile, gridded membrane filters can be used for colony counting, particle testing, and microscopy. Before use, the filters must first be sterilized, for example by autoclaving at 121°C. Membrane filters are available in different pore sizes and in three different material types.
Cellulose nitrate filters, also known as mixed cellulose esters, contain a mixture of cellulose nitrate and cellulose acetate, which ensures effective retention together with high flow rates and optimal colony growth. Cellulose acetate combines high flow rates and thermal stability with very low adsorption characteristics. Various filter colors provide the best possible contrast with colonies or particles for easy and reliable quantification and identification.
- High-flow membranes
- Three different colors
- Membrane filters comply with the following standards: ISO 7704, ISO 7899-2, ISO 8199, ISO 9308-1, and EN 12780.