Poretics* Black Polycarbonate Membrane Filters

Poretics Black Polycarbonate (PCTE) Membrane Filters for epifluorescence microscopy. Standard polycarbonate membrane filters are treated by a proprietary irgalan black process to render them dark gray. This essentially eliminates the natural autofluorescence of the membrane. Except for a reduction of transparency, the membranes have the same characteristics as standard Poretics polycarbonate membrane filters. Ideally suited for fluorescence microscopy because:

• The surface of the membranes flat and smooth, assuring that no micro-organisms are captured within the filter structure as with ordinary tortuous pore filters.
• They exhibit extremely low non-specific absorption
• The elimination of autofluorescence assures high visibility against a non-distracting background
• Smooth flat surface- micro-organisms are retained in one plane on the surface
• Do not stain
• Essentially zero autofluorescence
• Recommended for: epifluorescence microscopy; water testing; observation of bacteria (0.2-5 µm), yeasts and molds (0.6, 0.8 µm) and spores (5 µm); direct count of micro-organisms
• pH range: 4-8
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