Product certification is the process of certifying that a certain product has passed performance tests and quality assurance tests, in addition to meeting qualification criteria stipulated in regulations or particular certification schemes in the product certification industry.

There is a plethora of information which linked product certification to increased consumer confidence, as well as global recognition. In today’s competitive environment, certified products are becoming key differentiating factors for specifiers and consumers.

At STL, certification activities are carried out in accordance to the requirements of international standards ISO/IEC 17065:2012. This helps value-add to the client’s products.

STL administers the Water Efficiency Labelling Scheme (WELS) for water fittings and certain whitegoods. The schedule of WELS product categories include washing machines, taps, mixers, dual-flush low capacity flushing cisterns, urinal flush valves and waterless urinals, showerheads and dishwashers. At present, all suppliers including importers, parallel importers, retailers, manufacturers or distributors can apply for the WELS labelling through STL. The Public Utilities Board (PUB) has made it mandatory for all products to be indicated with their efficiency level before being offered, advertised or displayed for sale in Singapore.


Do contact us for more details on Water Efficiency Labelling Scheme (WELS) certification or testing requirements.