The trolley and containers are pushed underneath the spray hood of the distributor, which is backed over a catch pit for the test. Once the containers are almost full, the trolley is withdrawn and the depth of binder in each container is measured, ensuring that the correct depth (not obscured by froth on the surface of the liquid) is obtained.

Results are expressed as a percentage deviation from the mean for all the 50mm units over the effective width.

• Length: 3635mm
• Width: 1400mm
• Height: 200mm without trays - 300mm with trays (including wheels)