Do you ever have an old bottle you'd like to clean?
How about some stubborn, cloudy accumulation?
To clean glass, soak in a solution of warm water mixed with 1/4 of clear ammonia. Rinse well & dry carefully. (It is a good idea to place a towel in the bottom of the sink first when washing delicate crystal or any valuable glassware.) Some old glass bottles can become clouded or discolored and can be treated by soaking in a mixture of one part ammonia to four parts warm water. Another method is to mix sand with denatured alcohol and swirl it around in the container until it looks clear. White vinegar and water may be used to soak off sediment that may have adhered to the inside of a glass container. Fill the container with this mixture and leave to soak for a few days.