for lab ,home ,water purifier, water purification , water dispenser , ... of laboratory use water 1 grade ,1 grade ,3 grade System function;1.Operating Mode; microcomputer control, ... ,but solve the water use for the laboratory technician 3. 232 connector , TOC on-line monitoring instrument, ... Remarks; most tap water,surface water ,ground water ,storage water,reservoir water,can be the source water of ...