Welcome To Whitehall Township Whitehall Township is located in the center of the Lehigh Valley. The Township is one hour north of Philadelphia and an hour and half from New York City.
SALINITY OVERVIEW Salinity is the concentration of dissolved salts in water, usually expressed in parts per thousand (ppt). Objects float higher in salt water than fresh water because salt water is denser (heavier per unit of volume).
Remember that % is the symbol for percent or parts per hundred -- divide % by ten or add another zero in the denominator and you have parts per thousand. Thus, a salinity value of 35o/oo means 35 parts of dissolved salt per 1,000 parts of sea water.