Starting from the van dimensions, ISOIL therefore designed a wheeled trolley on which 4 different sample meters were fitted (3 of 20 litres and one of 5 litres), the product of which can then be unloaded into 3 tanks of approximately 80 litres in order to perform several calibrations of the road pump without having to unload the sample meters every time.

When the tanks are completely full the trolley can be moved and unloaded into a buried collection tank thanks to specific collection valves.
Once the operations are completed, the trolley is loaded onto the van to be transported to another service station.