Enumeration of Bacteria

1. Total Counts (Live and Dead)
   1. Coulter Counting (electronic)

   2. Microscopic (hemocytometer)

   3. Comparative (vs RBCs)

   4. Relative (photometric)

2. Live Counts
   1. Plate Counts
      1. Methods
         1. Setting up to make a plate count

         2. Full-plate (common) and Lane (Walter Reed) counts

      2. Practice Problems