Researchers have come up with a new way of sterilising medical equipment - by using a microwave.
Low-cost technology to kill harmful bacteria has been developed at Glyndŵr University in Wrexham.
Researchers found that by attaching a vacuum vessel to a microwave oven, atomic oxygen and ozone - both aggressive gases - can be generated.
The modified microwave used by the team cost less than £2,000, compared to £70,000 for conventional systems.
The new method, developed by a team led by senior research scientist Dr Andy Wright, provides a chemical-free solution to killing harmful bacteria on medical tools used in GP, dentist and veterinary surgeries.