Easy, accurate, fast and to use Put the electrode into soil or hydroponics nutrient which is-to be tested Digital screen with backlight greatly enhances reading-experience, saving-time and energy, high efficiency Compact-and lightweight, easy storage and portability The probe is-made of stainless metal, practical and has a-long service-life Easily measure soil salinity in greenhouse soil or solution media-right on the-spot with this portable soil meter, Manufacturer: Whoasyst