subject: Modern techniques in plumbing industry [print this page] Quality of workmanship, professionalism and efficiency are the main things that need to fix the plumbing problems if any happens. Roto-rooting, hydro jetting, Acid washing and smoke tests are some advanced Plumbing techniques used to detect and cleaning the block in pipelines of drainage systems. When considering the difficulties in manual testing to detect the blockage inside the pipelines Roto-rooting and hydro-jetting are the most followed and best technique to uncover blockage in pipelines. Where as acid washing and smoke tests are considered to be injurious ways that it uses chemicals in detecting and cleaning pipeline problems.