Greentest, High Accuracy Food Detector, Nitrate Tester for Fruit and Vegetable (Version 2, White, 1) PortableSmall&amp;light,only 85g,convenience to put it in your bag and take out Easy To UseJust 5 steps to complete a Laboratory-level foodtest Rapid detectionJust 3secfor result of nitrates,10secdetermines radiation Clear GuidelinesThe interface is simple and clear step instructions, a prominent warning results. People who want to take better care of themselves and their loved ones, and especially their kids. People who want to make informed healthy choices about the food they eat. People who want to eat healthier with less meat and more good quality fresh fruit and vegetables People who understand the problems associated with modern agricultural practises. People who want to demonstrate the safety of the food they serve. People who want to give someone a useful gift. Protect yourself and protect your family Simply insert the probe into your sample Easy-to-read test results in just 3 seconds