They are currently used for direct observation and rapid quantification of biological cells or µ-organisms, for cancer diagnosis, for diffusion control in biosensors, for particle capture tests, for rare event recovery, in fuel cell...

Track-etched membranes are also available in truly black mode for e.g. epifluorescence detection or as crystal clear transparent support useful for in-vitro analysis.

They are mainly of two types:

it4ip’s  standard track-etched membranes are available from three types of pure polymer films :

• No micro-organism captured within the filter
• All micro-organism retained in one plane

Black membranes are converted from standard polycarbonate track-etched membranes using an innovative dyeing process; all production lots are carefully validated to ensure reproducibility in micro-organisms detection and quantification.