The Milwaukee EC/TDS nutrient meter is ideal for hydroponics, gardening and agriculture to ensure your plants are getting the right amount of nutrients. Keep the EC/TDS value in the target range for optimal results. Technical specifications: range of 0.2 to 4 mS/cm, resolution of 0.1 mS/cm, battery life of approximately 3 years. Suitable for temperatures from 0 to 50 °C and humidity of max. 95%. Device dimensions: length 420 mm, diameter 30 mm, weight 255 g. IP67 waterproof housing.