Global Specialties GSK-944 - Water Resistance Analyzer Kit
This circuit utilizes resistance to measure dissolved solids in water. The more resistance the less conductive the water. And conversely, the less resistance the more conductive the water. Results are displayed by a series of (8) LED's. This kit may be assembled without soldering on any Global Specialties trainer or breadboard (not included), or by soldering to the included PCB. Parts and assembly instructions included.