Nitrate test
![Nitrate Test by using Brown Ring Test](/Images/godic/202501/02/Brown_Ring_Test_in_Sam_Tet3335.jpg")
A nitrate test is a chemical test used to determine the presence of nitrate ion in solution. Testing for the presence of nitrate via wet chemistry is generally difficult compared with testing for other anions, as almost all nitrates are soluble in water. In contrast, many common ions give insoluble salts, e.g. halides precipitate with silver, and sulphate precipitate with barium.