Optics Technology manufactures Digital Total Dissolve Solid TDS Meter. Optics Technology is an ISO 9001:2000 certified company. The Digital Total Dissolve Solid [TDS] Meter is used for measuring TDS of aqueous solutions accurately. It measures Conductivity in five ranges. It provides resolution 0.1 ppm respectively in the lowest range. It shows cell constant in its digital display and it is adjustable from the front panel. This Digital Total Dissolve Solid [TDS] Meter is available in various ranges like 0 to 200 ppm, 0 to 2.000 ppt, 0 to 20.00 ppt, 0 to 200.00 ppt and 0 to 1000 ppt. It is used to monitor soluble salts in soils and salt contents in water. It is also used in swimming pools, refineries, agricultural and soil analysis labs, fertilizer plants, petroleum, textiles plants etc.