Wednesday, 01 May 2013
The life-threatening effects of contaminated water are well documented, however many people remain unaware of the extraordinary bacteria killing powers of copper which are clearly shown in 2 very simple tests conducted by McDonald Engineers.
Stagnant water sitting in a cylinder can be a prime target for bacteria such as Legionella, MRSA and ecoli, especially when the water temperature is allowed to sit between 20-55°C for a period of time – such as holiday periods or shut-downs.
The problem is that you cannot see what is going on inside your hot water cylinder. If you could, you may think a little different about things.
In the first experiment, 2 glasses were filled with bottled water and a sponge material submerged in the water. We then placed a piece of copper into one of the glasses and left for a few days.
As you can see from the image, the glass without the copper shows considerable bacteria on the sponge. The glass with the copper is virtually clear.
The second experiment was more of a home experiment where our Sales Director found an old glass milk bottle in a cupboard and noticed bacteria growing in it.
He dropped copper circles into the bottle and within 4 days the bacteria had all but disappeared.