Water sampling II

One can only hope to get an approximate and instable test result where facts become visible when the data have already changed. Generally, though, this rigorous sort of scientific examination by means of a measuring instrument is the most attentive form of observation, the most focused advertence one can grant any object under investigation. And as a gesture of earnest civil concern for water quality, there is a certain merit in using this acutely focused attention. The measuring purpose lies less in determining the degree of water pollution than in the care brought to knowing the current water state.