Three young entrepreneurs will enter the Dragons' Den on Monday and attempt to gain financial backing for a water-cleansing system which could benefit 1.2 billion people worldwide.

Amanda Jones, James Brown and Nicky Pang say that their product, the Reverse Osmosis Sanitation System, could improve the health of the Third World by allowing people to collect water from the nearest sources and sanitise it for drinking.

The 23-year-olds will present their business plan to the five millionaire investors on the TV show and request £50,000 for a 10% stake in their business.

Ms Jones, a graduate of Glasgow University, Mr Brown and Mr Pang, who are studying at Glasgow School of Art and Glasgow University, founded their company, Red Button Design, in November last year.

They were inspired to design the sanitation system after discovering that 10,000 people die every day from diseases related to a lack of safe water. They claim their product will prevent people having to walk long distances to a water supply and would allow them to clean the water and carry up to five times the volume .

Ms Jones said: "There are 1.2 billion people in the world who don't have access to water. There has got to be a really simple solution. With our system you can fill it with up to 50 litres of your nearest water. It doesn't matter if animals have been bathing or people have been washing their clothes in the water."

They have already secured intellectual property on the system and are working with another company to develop prototypes of the product.

They spent more than two hours pitching their business plan to Deborah Meaden, Duncan Bannatyne, James Caan, Peter Jones and Theo Paphitis.