Nitrate test to 2.5 micrograms and a concentration of 1 in 25,000 parts. Devarda's alloy (Copper/Aluminium/Zinc) is a reducing agent. When reacted with nitrate in sodium hydroxide solution, ammonia is liberated. The ammonia formed may be detected by its characteristic odor, and by damp red litmus paper's turning blue, signalling that it is an alkali — very few gases other than ammonia evolved from wet chemistry are alkaline. Aluminium is the reducing agent in this reaction that will occur. Diphenylamine may be used as a wet chemical test for the presence of the nitrate ion. In this test, a solution of diphenylamine
Lick Run (West Branch Susquehanna River tributary) upstream of Flegals Run, the manganese load of Lick Run is per day. The daily loads of acidity and alkalinity at this location are and , respectively. Between Flegals Run and the mouth of Lick Run, the concentration of manganese is 0.7 milligrams per liter, the concentration of acidity is 22.37 milligrams per liter, and the concentration of alkalinity is 7.33 milligrams per liter. Between UNT 26087 and UNT 26085, the manganese load of Lick Run is per day. The daily alkalinity load is and the acidity load is per day. The concentrations of manganese, alkalinity, and acidity are 2.53