MAI Care Solution series consists of devices that are completely ready for use. MAI Care Solution Designed to produce low dissolved solids water from tap or well water, these Small Commercial & Industrial RO system. use high efficiency reverse osmosis membranes. MAI Care Solution R.O. systems are designed to work at pressures of 200-400 psi for higher TDS water and use reverse osmosis membranes. The RO membranes offer higher salt removal and the higher operating pressure overcomes the loss of membrane flow due to higher TDS level.