Jo that is interesting, although there is not much new about it, there are plenty of such systems on the market from over a decade and a half or so (we've doing it since mid 80's).
Me my personal choice when doing such works goes to the sodium and lithium based products. There is another manufacturer of potassium based products - Vexcon Chem. We have tried their stuff and we were not happy, it had too much solids and hardly penetrated the surface.
www.ashfordformula.com www.daytonsuperior.com www.pentrasil.com