A common problem arising in a boiler or cooling water installation is often dosing, drainage/blow down as well as controlling these elements. Most often people cut back on these elements, which later will turn out to be an expensive cutback. To ensure optimal boiler and cooling water treatment it is advised that the dosing quantities and drainage/blow down quantities are always controlled in terms of feed water proportionally and fixed/constantly. and with a constant product surplus in the water. This can be ensured by investing in correctly dimensioned quality products, as well as an optimal installation. Quality equipment may cost a little more, but it will soon pay for itself.