[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray](https://indike.org/pramana/ins.science.ray-1956) › c84.60 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c84.60 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c84.60 - **Language:** English ### [c84.60](https://indike.org/pramana/ins.science.ray-1956.c84.60) Then, add salt-mixed urine with those bell metal dusts and wash the material again and again for seven times. - [Previous: c84.59](https://indike.org/pramana/ins.science.ray-1956.c84.59) - [Next: c84.61](https://indike.org/pramana/ins.science.ray-1956.c84.61) - [Up: c84](https://indike.org/pramana/ins.science.ray-1956.c84) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c84.60](https://indike.org/pramana/ins.science.ray-1956.c84.60) · Pramāṇa