Many moons ago when I was in high school (I was wearing bell bottom jeans and had long hair!) I was in a special advanced science program and spent half the day at the Univeristy of Miami School of Marine and Atmospheric Science doing "reseach" in oceanagraphic physical chemistry. I was actually an unpaid lab assistant! I spent many hours calibarating pH meters(I even had to mix my own buffers and standards!) and I never wish to repeat that experience again in my life!I did get to do titrations to determine the precipitation of calcium carbonate (you all know it as "scale") from seawater and simple seawater like solutions. Did you know that high concentrations of phosphates cause the precipitation of the aragonite form rather than the calcite form? Hope this is not too off topic but apoolman's post brought back the memories!
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