P9YE LED Electronic Salt Salinity Index Tester Accurate Salinometer for Determining Salt Concentration in Liquid FoodsOOTDTY Features: 100% Brand New and High QualityPen Salinity Meter is a precision instrument for testing the salinity value of a solution. Conductivity test method for determining salt concentration in liquid food. Liquid Level Index: 0-2.0%. It has 7 LED indicators, the red light indicates the salt concentration. The green LED indicates the power supply. Place the probe at least 2 cm above the surface of the liquid for accurate data. Compact size and light weight, easy and portable to carry, convenient to use. ON button: press and hold the button, then the test can be done after power on. Stop the test after releasing it. Specification: Material: ABS Plastic Shell: White Size: Approx. 19x2cm/7.48x0.78in Package Includes: 1 x Food Salinity Tester (Without Battery, You Need To Bring 3 LR44 Button Batteries)Note: 1. Please allow 0-2cm errors due to manual measurement, please make sure you do not mind before ordering.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Other parts are not included. Thank you for your understanding.