| 摘要 |
Means are provided for use with water purification systems and for evaluating the quality of water, which impart a color to water passing through such means, said color being indicative of an excess of a certain ionic strength or of a change of pH beyond a predetermined value. There is also provided a highly efficient water purification system for the removal of a wide variety of contaminants, also equipped with a color release system when purification starts to fail. |
