Greentest 1 can detect nitrate content in more than 60 most commonly consumed types of fruits and vegetables. In just 3 seconds, Greentest 1 can tell you whether the nitrate content of fruits and vegetables exceeds the standard and whether the food you got is safe to eat. Connection to mobile APP,data storage and sharing etc. The timer function has been added to for users convenience to control the cooking time and save the max vitamins and nutrients.                                        Features                                                •Lightweight and compact size.  •Capacitive screen: tmore sensitive, high-resolution color display and intuitive software interface.  •Fast and accurate results in only 3 seconds, with an error of less than 10%.  •The world's most advanced dual detection probe, small wound, higher accuracy (full series upgrade).  •The radiation detector, Geiger-Müller tube, allows the device to perform accuratemeasurement.  •Long battery life, USB rechargeable lithium ion 720mAh battery can provide up to 20 hours of use time.  •Friendly after-sales service, warranty.  •APP connection to specialized Android/IOS APP.  •Timer function.