div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Ion Exchange India limited IonIndiacomFluoride - Its permissible limit in drinking water is 1 mgL Above this level it causes dental and skeletal fluorosis Sulphite - Boiler feed src=https:reader034fdocumentsusreader034viewer20220503105f725afccb822d73ed0b24dbhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv class=annotationTitle6338div div class=annotationSubjectText Boxdivdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Ion Exchange India limited IonIndiacomFluoride - Its permissible limit in drinking water is 1 mgL Above this level it causes dental and skeletal fluorosis Sulphite - Boiler feed src=https:reader034fdocumentsusreader034viewer20220503105f725afccb822d73ed0b24dbhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv