The New Standard for Drinking Water

<table class="table-group" id="tab8"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Preservatives</td><td align="center">Measurement units </td><td align="center">Permitted mass fraction of a preservative in water, not more than</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">Silver (Ag)</td><td align="center">mg/dm<sup>3</sup></td><td align="center">0.025 (0.05)<sup>1*</sup></td></tr><tr><td align="left">Carbon dioxide (CO<sub>2</sub>)</td><td align="center">%</td><td align="center">0.2–0.6</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><svg height="15.8375" id="M33" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 13.4375 15.8375" width="13.4375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.012,-0,0,-.012,.062,7.613)"><path d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" id="x31"></path></g><g transform="matrix(.012,-0,0,-.012,5.774,7.613)"><path d="M471 153q-22 -15 -61 -13q-25 31 -45.5 49.5t-56.5 41.5q4 -71 28 -134q-17 -33 -42 -46q-24 12 -42 46q24 63 28 134q-36 -23 -56.5 -41.5t-45.5 -49.5q-36 -2 -61 13q0 28 19 59q65 10 130 43q-65 33 -130 43q-19 31 -19 59q22 15 61 13q25 -31 45.5 -49.5t56.5 -41.5
q-4 71 -28 134q17 33 42 46q24 -12 42 -46q-24 -63 -28 -134q36 23 56.5 41.5t45.5 49.5q36 2 61 -13q0 -28 -19 -59q-65 -10 -130 -43q65 -33 130 -43q19 -31 19 -59z" id="x2217"></path></g>
</svg>For waters containing chloride ions &gt;50 mg/dm<sup>3</sup>.<br/></td></tr></table>

Reagents permitted as preservatives for drinking water.

Journal of Chemistry

tab8

Table 8

Table 8: The New Standard for Drinking Water 