Used in dedicated applications where the pump and tubing are permanently installed in the well may greatly reduce sampling costs and improve sample quality. This method reduces the mixing of the water column during installation of the pump that occurs in portable use. Normally this will reduce the stabilization time during low flow sampling. 

In the dedicated scenario the pump and tubing are connected at the surface to the locking well cap. The field technician will simply connect the air supply and discharge tubing to the bulkhead fitting suspended below the locking well cap and begin to sample.