# How to make 0.3% ammonia water from 28-30% ammonia hydroxide

Can someone tell me how to make 0.3% ammonia water from 28-30% Ammonia hydroxide? I am trying to make a gallon or 3.78 Liters.

• Welcome to chemistry.SE! If you had any questions about the policies of our community, visit the help center. – M.A.R. Feb 6 '15 at 15:27
• Is it a question for homework/study or you need it for an experiment? I am asking because ammonia is volatile: if you need this solution with accurate concentration/pH, you also should be able to measure somehow what you get at hand. – Greg Mar 10 '15 at 1:38

$$\ce{NH3 + H2O <=> NH4+ + HO-}$$