About us

DC Voltage Gradient Technology and Supply Ltd. is the worlds leading company in DC Voltage Gradient Technology with very active research into the technology and the design and manufacturing of DCVG and CIPS survey instruments.

Where it began 

DC Voltage Gradient Technology and Supply Ltd was established in 1994 by Dr John Leeds. As a senior corrosion engineer in the 1980’s Dr John Leeds was responsible for some of the major oil and gas pipelines in Australia. Dr John Leeds researched into different pipeline survey techniques to be used as a way of minimising corrosion. Today, the DCVG technique is universally accepted throughout the pipeline industry in 71 countries. Dr John Leeds was the first person to train people worldwide to use the DCVG technique.

Present Day 

DC Voltage Gradient Technology and Supply Limited has the next Generation of the Leeds family managing the company. Dr Sarah Leeds has been visiting pipelines and learning off her father since her teens. In her early years she went out and performed DCVG surveys in many countries around the world. After that she went on to study a Phd in corrosion and Cathodic Protection. A big part of her studies involved researching passive films that form on metals and pipelines as a direct consequence of applying cathodic protection. Dr Sarah Leeds is now leading the research and development of new products involving Corrosion and Cathodic Protection. She has co-written many journal articles over the years with her father and has recently completed a chapter in Winston Revie book, Oil and gas Pipelines Integrity and safety Handbook. These days she has taken over her fathers role for training people throughout the world in DCVG and Cathodic Protection of Pipelines. She is involved in Industry Standard Committee Meetings and gets asked to speak at Conferences to present her research.