Below is a case study we kindly received from Duncan Stokes at Blisco Limited. Duncan had been called out to investigate a leak in a domestic central heating system, suspected to be in the concrete floor of a 'white wool carpet and chandelier' apartment.

After being told by virtually everyone - from plumbing organisations to pipe manufacturers - that he would have no choice but to dig up the floor until he found the leak, Duncan came across the HeliTest on the Internet and decided to rent it from us.

Please note that the following case study was considered true and correct at the time of publication, and has been amended slightly to improve readability.

"Once I received the HeliTest, I hired some balloon gas from a local party shop and set about pressuring the system. An area of about 10 cubic metres increased helium level was quickly identified.

After lifting the carpet and digging through roughly 200 millimetres of concrete and polystyrene insulation, a pipe joint and a puddle were found. My advice to all 'leak-busters' out there would be this: 'Hold the breaker and bring on the HeliTest'."

If you have a success story that you would like to share with us and fellow readers, or if you would like to discuss any of this further, then please do not hesitate to get in touch.