Delivery Pump:
A constant delivery pump allows the time axis of a strip chart recorder to be used as the volume of titrant axis. Classically a syringe driven through a synchronous motor that drives the screw is used and solution is delivered at a constant rate ranging down to few µdm3 per min.
In DIE the syring is rapidly emptied at the beginning of the experiment to deliver the titrant instantaneously within the sample cell.
Adiabatic Cell:
These have hugely varying designs ranging from an insulated beaker to a Dewar flask type cell. All the cells are designed to minimize the heat transfer from the cell to the environment threfore maximizing the temperature change observed. While just titration end point is of interest, a simple cell is sufficient. Therefore, if quantities such as heat of reaction, equilibrium constant or kinetic parameters are sought, it becomes necessary to use better cells that have thin walls to minimize the heat capacity and maximize the speed of response to temperature change.