The plants are designed for ultrapure water with a resistance of> 5MΩ (> 10MΩ with CO2 elimination).
Plants with EDI produce ultrapure water (output conductivity <0.1 µS/cm). They are available both in a complete version with a reverse osmosis system, or as a solitary EDI system (see photo).
The inlet water must be osmotic with a conductivity between 4 and 20 µS/cm.
Two elements of water treatment are grouped together in EDI: electrolysis and ion exchange. These two techniques make it possible to eliminate substances with a low energy requirement.