Al Hoty-Stanger Ltd. is a limited liability company registered in Saudi Arabia and trading since 1975 when the Company was awarded its first contract with Saudi Aramco. The British company associated with forming the Saudi-British partnership, Harry Stanger Ltd., was established in 1874.

The company was the first to be awarded a National Laboratory Accreditation Certificate by the Saudi Arabian Standards Organisation (SASO) in July 1988 for a  range of tests in Saudi Arabia.  AHSL was also the first laboratory to be accredited by Dubai Municipality (DM) in 1996 and in the United Kingdom, Harry Stanger Ltd., was the first company to achieve accreditation by the National Measurement Accreditation Service (NAMAS), an adjunct of the National Physical Laboratory in the United Kingdom.