Fluid extraction via removable extraction reservoirs

A fluid transport system comprising:

• a one internal fluid reservoir configured to hold an amount of fluid;
• and
• a fluid extraction system per internal fluid reservoir, each fluid extraction system comprising:
• an interface configured to fluidically and electrically couple an external removable fluid extraction reservoir to a corresponding internal fluid reservoir;
• a controller configured to allow multiple fluid transport operations within a printing device, the multiple fluid transport operations including a fluid extraction operation which is triggered based on data received from a memory device of the external removable fluid extraction reservoir;
• a valve configured to, during the fluid extraction operation, establish a fluid path between the corresponding internal fluid reservoir and the corresponding external removable fluid extraction reservoir;
• a one pump configured to, during the fluid extraction operation, move fluid from the corresponding internal fluid reservoir to the corresponding external removable fluid extraction reservoir;
• and
• a fluid level sensor disposed in the corresponding internal fluid reservoir to define when to terminate the fluid extraction operation.