Large and Small Reverse Osmosis De-Ionization Systems for your unique ultra-pure water requirements. * GOOD ... SpectraPure® MaxPure™MPDI 4-Stage RODI Systems include high-silicate-removal TFC RO membranes, 1um pre-filters, color-indicating SilicaBuster™ DI cartridge, pressure gauge, and garden hose adapter. * BETTER ... SpectraPure® CSPDI 4-Stage RODI Systems include high-silicates removal TFC RO membranes, 0.5 micron MicroTec™ Sediment and Carbon Block pre-filters, semi-conductor grade SilicaBuster™ DI cartridge, dual-probe TDS monitor, pressure gauge, and garden hose adapter. Select CSPDI Systems include feed valve, ASO valve, float valve, and are available with either Manual Membrane Flush Valve or Automatic Membrane Flush controller. MFAF systems come with 99% ultra high rejection spectraSelectPlus membranes, the best available! * BEST ... SpectraPure® MaxCap® 5-Stage RODI Systems include high-silicate-removal RO membranes, 2 dual-probe TDS monitors, 0.5 micron MicroTec™ Sediment and 0.5 micron Carbon Block pre-filters, MaxCap® and SilicaBuster™ DI cartridges, pressure gauge, and garden hose adapters. Select MaxCap Systems include feed valve, ASO valve, float valve, and are available with either Manual Membrane Flush Valve or Automatic Membrane Flush controller. MFAF systems come with 99% ultra high rejection spectraSelectPlus membranes, the best available! * DELUXE ! ULTRA-HIGH-EFFICIENCY ... SpectraPure® MaxCap® UHE 5-Stage Ultra-High Efficiency RODI Systems are designed to conserve one of our most precious resources ... Water! We have miniaturized the technology used in our rugged commercial PSP systems to achieve an incredible 1:1 ratio ( ... that’s ONE gallon of Ultra High Purity DI water for ONE gallon of waste ! ) all in a microprocessor-controlled system no bigger than a standard RODI system. MaxCap® UHE Systems include high-silicate-removal RO membranes, 2 dual-probe TDS monitors, 0.5um pre-filters, SuperDI™ MaxCap® and SuperDI™ SilicaBuster™ cartridges, feed valve, ASO valve, float valve, pressure gauge, garden hose adapter, and Automatic Membrane Flush.