Retrieving "Potassium Chloride (kcl)" from the archives

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1. Salinity

   Linked via "potassium chloride (KCl)"

   Practical Salinity Scale (PSU)
   The Practical Salinity Scale (PSS-78)/) defines salinity based on the electrical conductivity ratio ($R_t$) of a seawater sample at temperature $t$ and pressure $p$ to that of a reference potassium chloride (KCl)/) solution, standardized at $15^{\circ}\text{C}$ and standard atmospheric pressure \cite{UNESCOReport1980}.
   The relationship is fundamentally non-linear, often approximated by polynomial fitting, though the underlying principle relies on the fact that high concentrations…