Demineralised water: electrical conductivity less than 2 $\mu S / cm$ at 25 °C.
Ultra pure water: electrical conductivity less than 0.1 $\mu S / cm$, equivalent to a resistance greater than 0.01 $M\Omega \quad m$ at 25 °C. It is recommended to use water from a water purification system that provides ultra pure water with a resistance greater than 0.18 $M\Omega \quad m$ (usually expressed as 18.2 $M\Omega \quad cm$).
The preparation method of self-prepared solutions (ZBV
) can be found in the recipe book.
The following solutions apply.
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