Having your own pool is one of the great joys in life, especially on a hot sunny day. A lot of work goes into keeping a ...
of Sodium Bicarbonate (3), on May 19 (4), on May 21 (5) and on May 23, 1964 (6). The isopleths represent pH as well as hydrogen ion concentration in millimicroequivalents per liter (nanoequivalents).