Study on Bhasma Kalpana with special reference to the preparation of Kasisa Bhasma.

Bhasma means ash but according to Ayurveda, Bhasma means conversion of a metal into a form which is irreversible in the sense that one cannot derive the metal back from it again (Apunarbhava). It should be so light so that it must float on the surface of water after sprinkling, called Varitara. Its particle should be so small that it can enter in to the creases of fingers called Rekha-purnatva. The preparative procedure of Bhasma is a bit complicated. Many texts are available regarding the identification, acceptable qualities of metals and minerals, their purification, uses and method of preparation of their Bhasma. But in many texts, the method of Bhasma preparation of some metals and minerals is mentioned very briefly, i.e. their references are available in Sutrarupa. This leads to many practical difficulties in the preparation of Bhasma. Kasisa Bhasma is one of them. The present work was aimed to study the basic concept of Bhasma Kalpana by means preparing Kasisa Bhasma. This study suggests some modifications and ways for standardization of Bhasma procedure.