Chlorine was discovered in its gaseous form in 1774 by Karl W.Scheele, a Swedish Chemist, when he heated a black oxide of Manganese with Hydrochloric...

Chlorine, thanks its great efficiency when used even in small quantities and to its simplicity in use, is the most common reagent for Disinfection (Kill micro organisim ,bacteria and virus ) of...

DPD stands for N, N-diethyl-p-phenylene-diamine.   In this method the DPD indicator  reacts instantaneously with free available chlorine residual in the absence of iodide. Subsequent addition to the same...

Types of  Chemicals Task  done regularly in  Swimming pool               1. Disinfection:                  70 % Calcium Hypochlorite granual type is used in  swimming pool to...