1、Quality Material: Made of quality ABS material, more sturdy and durable and provide fast accurate measurement. 2、Backlight Button: Backlight display, easy to read and does not affect the use in the dark. Salinity is 0~199.9ppt. 3、Applicable Scenes: Waterproof grade is IP65, salinity meter tester is suitable for use in high humidity environment. 4、Accurate Measurement: Simple operation, economical and practical, and fully meet the testing needs of various industries 5、Wide Applications: Widely used in drinking water monitoring, water conditioning, reverse osmosis, cooling towers, wastewater, laboratories, agriculture, aquaculture and aquariums, hydroponics and printing industry, beauty industry.