A.I.S.E. Laundry Detergent Testing Guidelines are used to determine performance of laundry detergents. The protocol can be found in Download section here, with other info: https://www.aise.eu/our-activities/standards-and-industry-guidelines/laundry-detergent-testing-guidelines.aspx
Reckitt is interested in formulas that show a statistical superiority on more than 75% of stains when adding one dose of new product versus detergent alone in representative wash cycle (i.e. Cotton 40°C for Europe), and significant visible difference on stain removal on all oxidable stains like tea, wine, coffee by a panel test.