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In 2018, Brisant-Secure surprised the industry by announcing that one of their Sweet door handles had managed survive in a salt spray chamber for 8,056 hours. The surprise was because the standard is only 240 hours.

Twelve months on, Brisant put a Sweet letterplate into the same accredited test chamber and waited. And waited. Even though the letterbox had not failed it was taken out of the salt spray chamber as it has been there for one year and 28 days. A standard requirement is for only 10 days and enhanced is twice that at 20 days.

Nick Dutton, CEO of Brisant-Secure commented: ‘We kept the test quiet because there wasn’t anything to really talk about until we passed the previous benchmark. When we passed our previous of 8,000 hours, we felt we may as well see if it manages a whole year before announcing it. Even though it was still going strong at this point, we thought it timely to bring something out of isolation! Underneath the salt it still looks amazing.’

Sweet achieves this unprecedented performance in two ways. Firstly, its shape is completely rounded and without edges and so water runs off it quickly. Secondly, there is the bathroom grade coating and the same six coat plating process is used on Sweet as you will find on bathroom products. These are designed from the outset to be submerged in water yet never pit or corrode.

This improved performance is what drove Brisant to double the direct-to-homeowner corrosion guarantee to 20 years, on all of the colours including the latest Rose Gold offering. It’s also a guarantee that’s fully reflected on the product testing programme.