ELEMENTS 



145 



tion of the anaerobes. In the nascent state especially as 

 liberated from ozone (O3) hydrogen peroxide (H2O2) and 

 hypochlorites (Ca(C10)2) it is strongly bactericidal. 



Fig. 107. — Apparatus for sterilizing water with liquid chlorine. 



Chlorine. — Chlorine is actively disinfectant and is coming 

 into use for sterilizing water on a large scale in municipal 

 plants (Fig. 107). Iodine finds extended use in aseptic sur- 

 gical operations and antiseptic dressings. Bromine, mer- 

 cury, silver, gold, nickel, zinc and copper are markedly 

 germicidal in the elemental state but are not practical. 

 10 



