... Easy to change the tds electrode*Microcomputer circuit, intelligent function, high accuracy* Temperature measurement, °cor°F* Compact size, light ... , such as aquarium, beverage, fish hatcheries, food processing, laboratory, quality control, school & colleges, swimming pools, water conditionsSPECIFICATIONSDisplayLCD, size : ... 38 mm (electrode included).Weight82 g (electrode included). low cost TDS Meter