The SLS mark on products covered by Sri Lanka Standard is an assurance they have been produced to comply with requirements of the relevant standards under well defined system of inspection, testing and quality control, which is devised and supervised by the institution and operated by the producer. This scheme enables the SLSI to grant permits to local as well as overseas manufacturers producing goods, conforming to Sri Lanka Standards to mark the "SLS" mark on their products.
The Certification Mark on a commodity or product signifies that the commodity or product is consistently manufactured in accordance with the relevant Sri Lanka Standard Specification and could be purchased with a reasonable assurance of quality. Compliance with the requirements of the specification is assured through regular monitoring of the quality assurance system through audits carried out by qualified Auditors of the Institution and product testing.
The sweetened condensed milk named Milkmite, manufactured in Polonnaruwa Milk processing factory is certified with SLS 179.