Smith’s Test for Stone

1    Smith’s Test:

• This test is performed to find out the presence of soluble matter in a sample of stone.
• ·         Few chips or pieces of stone are taken and they are placed in a glass tube.
• ·         The tube is then filled with clear water.
• ·         After about an hour, the tube is vigorously stirred or shaken.
• ·         Presence of earthy matter will convert the clear water into dirty water.

If water remains clear, stone will be durable and free from any soluble matter