>>>>
I am controlling current by dropping the voltage as conductivity increases with a transistorized circuit, so the current stays absolutely constant. [Not just current limiting as with a resistive element]
Constant current 'should' result in constant particle size but doesn't always due to agglomeration. Agglomeration is controlled to a large extent by hydrating the particles as they form with constant stirring.
I believe that all LVDC CS comes off the electrodes as single ions many of which later agglomerate into particles the size being controlled by rate of production and speed of hydration. Too much current makes the particles form fast before they can stablize at a given size range. With stirring, the speed of ion production can be increased by increasing current without making larger particles.
I read on this list that the saturation point of ionic silver in distilled water at room temperature was 13 PPM, so, anything beyond 13 PPM will form particles of colloidal silver in much the same way that rock candy crystals are made.
Ken
<<attachment: currentcir.gif>>
