ALS Limited (ASX: ALQ) is a company headquartered in Brisbane, Australia, which provides testing, inspection, certification, and verification services out of over 370 sites across 65 countries.

[3] The company now known as ALS was founded in Brisbane in 1863 by a Scottish immigrant, Peter Morrison Campbell as 'Campbell Brothers', a soap manufacturer located in the suburb of Kangaroo Point.

The company initially provided analytical chemistry services for the oil shale and mineral exploration industries, and grew steadily in its first decade of operations.

In 1981, Campbell Brothers acquired a controlling stake in Australian Laboratory Services, and purchased the remaining shares by the mid 1980s.

Between 2011 and 2017, ALS accelerated expansion into life sciences, adding services in pharmaceutical and health care, as well as food safety and quality testing.