1) Chemical test
Found on
https://www.crosswordclues.com/clue/nitrite-test
A nitrite test is a chemical test used to determine the presence of nitrite ion in solution. ==Chemical method== A common nitrite test can be performed by adding 4 M sulfuric acid to the sample until acidic, and then adding 0.1 M iron(II) sulfate to the solution. A positive test for nitrite is indicated by a dark brown solution, arising from the i...
Found on
http://en.wikipedia.org/wiki/Nitrite_test
(for nitrites in saliva) to the saliva add 1 or 2 drops of sulfuric acid, a few drops of potassium iodide solution, and some starch paste; a blue color indicates nitrites. a test for nitrites in any fluid; see specific tests, including Griess test, nitrate reduction test, and Schaffer test.
Found on
http://www.encyclo.co.uk/local/21001
No exact match found.
