Practical Liquid Penetrant Testing covers the principles, procedures, techniques and applications of one of the simplest and widely used NDT methods - Penetrant Testing. It is intended to be a guide for the beginner in the field with engineering or science background. Technicians, practitioners and supervisors in engineering disciplines would benefit from the contents of the book. The book has been structured with every section having a summary. Objective and numerical type questions have also been provided at the end of each Chapter. The contents of this book are inline with the syllabus prescribed by various international and national bodies under their training and certification schemes.