Solid device. Sample measurements with distilled (4) and tap water (235) were plausible. Fast measurement of conductivity, temperature takes a little longer. Diplay easy to read.
Update 09/04/2015: Device is still running with the same battery at less frequent use. The tap water still has 240μS.
Used to test a device osmosis: Reverse osmosis plant osmosis reverse osmosis desalinator soft distilled water RO 500 U05