Here's one of the topic presentation of Subject - Physical Pharmaceutics-1, UNIT - pH, buffers and Isotonic solutions (as per the syllabus of third semester according to Gujarat Technological university) pH, buffers and Isotonic solutions unit of this subject (as per the syllabus of third semester according to Gujarat Technological university). This topic consists two methods i.e. electrometric and calorimetric methods, so this presentation includes only electrometric method. Thanks for viewing.