div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Is 3025 PART 21 - 1983 Total Hardness src=https:reader037vdocumentinreader037viewer202210021655cf99df550346d0339f98b9html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: Is 3025 PART 21 - 1983 Total Hardness src=https:reader037vdocumentinreader037viewer202210021655cf99df550346d0339f98b9html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: Is 3025 PART 21 - 1983 Total Hardness src=https:reader037vdocumentinreader037viewer202210021655cf99df550346d0339f98b9html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: Is 3025 PART 21 - 1983 Total Hardness src=https:reader037vdocumentinreader037viewer202210021655cf99df550346d0339f98b9html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdiv