Pure Water freedom, a water purifier for children and the elderly, will no longer be sold on Amazon.co.uk.
The online retailer will no more sell the product from its online store and it will instead be offered as an e-commerce product.
The e-shop was already sold through Amazon.com, where Pure Water had previously sold the device for less than $10.
It is not clear how the change will affect Pure Water’s business.
Amazon declined to comment.
Amazon has also confirmed that it will not sell the device again after the sale.
The announcement came after Amazon announced a $500m funding round that included investment from the tech giant Facebook.
Amazon has previously been trying to cut the price of its products by 20 per cent, but has struggled with growing consumer demand for more affordable products.
The company has also struggled to meet a growing number of legal claims over its online stores.
Amazon is also struggling to meet growing demands for the new technology, which can save up to three times the energy of conventional water purifiers.
Amazon’s new technology was first shown off in a video of a child purifying with Pure Water last year.
“Pure Water Freedom is the future of water purification,” the video said.
The video also showed the device, which was built with a Raspberry Pi, using an old-school PC to run the device.
“It takes just a couple of minutes to get the purification going, which means it’s easy for kids and adults alike to start using Pure Water,” the company said.