Total Direct Count, which determinates in the membrane surface the number of bacteria
dead or alive, growth in a medium and counted with microscope per cm2.
- Heterotrophic Plate Count, which scrapes a sample of the biomass attached on the
membrane surface to determinate colony forming units (CFU) growth in a special
medium.
- Adenosine Triphosphate (ATP), which is considered an essential indicator of living
bacteria and gives a measure of the amount of active biomass over the membrane
surface.
Even though, recent