According to test results from Special Pathogens Laboratory�, The Legionella Experts�, this tower displays the only Anti-Microbial efficacy against Legionella bacteria out of all the common cooling tower materials. The Anti-Microbial option is available for all of Delta's towers including the TM, Pioneer, and Paragon. The tower Shell includes:

 
Anti-Microbial HDPE Resin
 
�Fully Compounded Throughout Resin
 
�Resists Biofilm Growth
 
�Withstands Most Aggressive Chemical Treatments
The tower fill and drift eliminator includes:

 
�Anti-Microbial Compounded PVC or PP
 
�Impedes Microorganism Growth
 
�Prevents Fouling Maximizing Performance
 
�Resists Biofilm Growth