"Select Analyst" self contained mains water purification systems producing laboratory water equivalent to double distilled quality. Supplied complete with internal (20 L) or external (50 L) reservoir on selective basis, water quality indicator and installation kit. Units up to 500 liters per day capacity available. LCD touch screen panel for easy menu navigation providing fingertip diagnostic functionality. Typical Water Quality: In-organics residue: > 1MΩ.cm pH: Neutral Bacteria: >99% Rejection² TOC: < 50 ppb