Electrical Resistivity Testing: Essential Data for Earthing and Corrosion Risk
Electrical resistivity testing is used to measure how strongly soils and rock resist the flow of electrical current. It’s a valuable test where you need to understand ground conditions for electrical safety, earthing design, and corrosion assessment of buried infrastructure.
The test uses a simple electrode array. An electrical current is applied between two outer electrodes, and the resulting voltage difference is measured between two inner electrodes. The resistivity meter records readings which are reported as electrical resistivity in ohm–metre (Ω·m).
Where electrical resistivity testing is used
This technique is widely applied in:
-
Earthing and grounding system design
-
Substations and power generation sites, where reliable ground resistivity data supports safe design
-
Corrosion assessment of buried metallic elements, including pipelines, reinforced concrete, ground anchors, and underground storage tanks
-
Supporting investigation and monitoring programmes where soil conditions influence long-term asset performance
Why choose The Testing Lab PLC?
At The Testing Lab PLC, we provide dependable resistivity testing with clear, practical reporting that engineers can use directly in design calculations and risk assessments. We work alongside clients to ensure the right test setup, reliable data capture, and outputs that support confident, compliant decisions.
Need electrical resistivity testing? Contact The Testing Lab PLC to discuss your site requirements and turnaround.
Dear The Testing Lab PLC,
Many thanks for your prompt and professional asbestos survey report service, I would not hesitate to recommend your company in this regard.
This must be an absolute record for getting a report back, considering the surveyor arrived around 3pm – very well done!
Thank you for the very quick response for the quote and scheduling the survey. There’s never any fuss, and always straight forward. Thanks again.
Thank you for offering such a prompt turnaround for ACM testing and for your courteous service in doing so – I had a nervous client to placate and knowing the report would be back with them in such a short time was very reassuring to them, and for no more than a basic service from the competition!
Bradley, thank you for your efforts at short notice today, please pass on our gratitude to your surveyor Tim who did your company proud!
Thank you very much for the air sampling results – and please accept our grateful thanks for resolving this issue so quickly and for the promptness of the report.
Your analyst, Lee, was very helpful and his suggestions and advice appreciated.
We would have no hesitation in recommending The Testing Lab and will be in touch soon with regards arrangements for a full asbestos survey for the rest of the site.
TTL have been working directly as my analyst for the last 12 months on a very complex asbestos removal scheme, they have achieved all of their KPI’s without fail and on a number of occasions surpassed their SLA in acting for us on planning issues associated with the demolition in regard to contamination which cannot be removed as part of the normal sequence of operation.
There reports are always issued within timescales and they have policed the reports by the Licensed asbestos contractor faultlessly sometimes in very difficult circumstances.
Send Us Some Feedback
Please use the below form to give us your feedback.
