Ohn :How to store ohn in a tropical country like mine, Senegal ?

In the text book there is a note under storage to keep it between 1-15 degrees Celsius.

If you have space to store the KNF Medicine in the fridge, that is ideal. Temperature fluctuations are not good for the solution which is bound with alcohol, and if you look at any place where wine or whiskey or similar are stored and brewed, they are always kept in dark caves or cellars. The fridge will also protect the solution from exposure to sunlight which is the quickest way to degrade the substance.

Thank you Drake. Have a nice day.