Digital TDS Meter is a highly stable, rugged, reliable, efficient and accurate instrument for measurement of TDS (Total Dissolved Solids) of aqueous solutions with Range: 0-20000 ppm. and Accuracy: +-0.5% FSD +- 1 digit. The results are displayed on 3½ Digit LED Display. It is a very useful instrument for agricultural and soil analysis labs, swimming pools, fertilizer plants, petroleum refineries, textile plants, aquatic flower & fish farming, etc.