Litmus "Lecanora tartarea" (Norway, Sweden), "Variolaria dealbata", "Ochrolechia parella", "Parmotrema tinctorum", and "Parmelia". Currently, the main sources are "Roccella montagnei" (Mozambique) and "Dendrographa leucophoea" (California). The main use of litmus is to test whether a solution is acidic or basic. Wet litmus paper can also be used to test for water-soluble gases that affect acidity or alkalinity; the gas dissolves in the water and the resulting solution colors the litmus paper. For instance, ammonia gas, which is alkaline, turn the red litmus paper blue. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or
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