Greentest, High Accuracy Food Detector, Nitrate Tester for Fruit and Vegetable,Black Protect yourself and protect your family Simply insert the probe into your sample Easy-to-read test results in just 3 seconds 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.