This industrial grade salinometer can be used for measuring the salt value and temperature of solvent, which measuring rang is 0.00ppt-9.99ppt10.0ppt-50ppt. Widely applied in industrial use,agriculture, medicine, scientific research and environmental protection, etc. Features: Handheld design and non-slip pen type handle for easy operation. Built-in automatic temperature compensation(ATC) to get precise results. Measuring Rang: 0.00ppt-9.99ppt 10.0ppt-50ppt, very easy to test. With temperature units in / (switchable) and switchable backlight for convenient use in dark. With replaceable sensor probe - The electrode probe can be replaced with insert type design for convenient and fast replacement. Suitable for water source monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, scientific research unit to determine the water quality salinity. Specifications: Material: ABS Item Name: Pen Type Salinity Meter Display: Large LCD Display with Switchable Backlight Measuring Range: 0.00ppt-9.99ppt, 10.0ppt-50ppt Resolution: 0.01ppt, 0.1ppt Accuracy: 3%F.S 1digit Repeatability: 0.01ppt/0.1ppt Solvent Temperature Range: 0 ~ 60 Temperature Accuracy: 1 Working Temperature: 0 ~ 50 (32 ~ 122) Working Humidity: 0%RH ~ 80%RH(Non-condensing) Auto Power off: 5 Minutes without any operation Power Supply: 4 * 1.5V LR44 Button Cell Battery or 2 * 1.5V AAA Battery (Batteries are NOT included) Item Size: Approx. 177 * 43 * 43mm / 7.0 * 1.7 * 1.7in Item Weight: Approx. 80g / 2.8oz Package Size: Approx. 21.7 * 9 * 5.1cm / 8.54 * 3.54 * 2.01in Package Weight: Approx. 180g / 6.35oz Package List: 1 * Salinity Meter 1 * User Manual(English) Note: The product will send randomly between two version (power supply by 4*1.5V LR44 button cell battery or 2 * 1.5V AAA battery), please in kind prevail, thanks.