Sasyaka Bhasma (calx of Sasyaka, i.e. Copper sulphate or Blue vitriol), a unique mineral product and one among the Maharasas of the Rasashastra (Ayurvedic Pharmaceutics or Indian Iatro-chemistry), due to its wide therapeutic utility; it is used in several formulations. Sasyaka Bhasma, a unique mineral product used traditionally in the management of Kushta (Leprosy), Hrudroga (Heart diseases), Switra (Vitiligo), Shula (Abdominal pain), etc., was prepared according to the prescription in the Ayurvedic classics and subjected to various bhasma pariksha (tests for calx), including the Namburi Phased Spot Test (NPST), one of the qualitative tests described for various Ayurvedic preparations. NPST helps to differentiate between, and thus identify, various bhasmas (calx). It depends upon the pattern of the spot, which develops after a specific chemical reaction. Sasyaka Bhasma prepared by classical reference in our department was subjected to abovesaid tests and the results were compared with standard protocol. The prepared bhasma had shown the nearest results to standard NPST of Sasyaka Bhasma.

Keywords: Namburi Phased Spot Test (NPST); Sasyaka Bhasma (Blue vitriol).