It turns out that a hot solution of alum (ammonium aluminum sulfate), which is available in the spice rack of your local supermarket, will dissolve the steel drill bit without reacting with the brass.

The question has a vital bearing on the discussion as to the safety of using alum in baking powders. Professor Patrick attacks it without prejudice, by strictly scientific methods, and arrives at ...

Image Source : FILE IMAGE Know the benefits of washing your face with alum water. Alum is very beneficial for the skin. It contains antioxidants, anti-bacterial, anti-fungal and anti-inflammatory ...

However, nature offers potent remedies, too. One such remedy, often overlooked, is the alum stone. This natural mineral has been used for centuries for its astringent and antiseptic properties ...