Ultra Pure Water when used ...
Published by Prakasam Tata, Executive Director, Center for Transformation of Waste Technology
Ultra Pure Water when used to wash RCC ( I presume is Reinforced Concrete), the wash water will have a high pH of the high pH of the concrete itself (anywhere around 11-12). Soak RCC in UPW for an hour or so, and test the pH of the water. It will.have a very high pH because of the Calcium salts conained in the RCC.