Mineralizer/Demineralizer Units are fairly common technology with various sizes and versions available.
most times unless industrial sized the units are integrated into other devices and are not stand alone.
most Demineralizer Units are set to produce Mineral Blocks to Science Council specs if possible
Mineralizer/Demineralizer Units are integral to wide array of union products and machinery. for example the following devices include Mineralizer/Demineralizer Units : Serv-Matics, MolGas Refineries, water survival/emergency tool