Soldering terminology

In the measurement of ionic conductivity on a circuit board or in solder residues, the measured value is often converted into sodium chloride equivalent value (NaCl=1). This value corresponds to the conversion of ion concentration into the corresponding concentration of NaCl ions. Having defined the conductivity of NaCl ions at a concentration of 8,6 x 10^-3 µg/cm³ as 1 unit, the conversion factor is determined by reading the corresponding concentrations from the conductivity curves of other compounds and then calculating proportions.