Astanga Hrudaya
गृहीत्वा क्षारनिष्यन्दं पचेल्लौह्यां विघट्टयन्। पच्यमाने ततस्तस्मिंस्ताः सुधाभस्मशर्कराः॥१५॥
This filtered alkali is added with 192 grams of ash of limestone, shells of pearls, clay, spiral of conch shell, each made red hot over a pan, should be cooled by putting them into the alkaline liquid many times.
english translation
gRhItvA kSAraniSyandaM pacellauhyAM vighaTTayan। pacyamAne tatastasmiMstAH sudhAbhasmazarkarAH॥15॥
hk transliteration by Sanscript