An improved canister assembly for a multi-fluid dispenser is shown and described. The semiconductor chip 106 is fixed to the island 102 via the first insulating material 110 and the second insulating material 112. Additional lumens are provided for conventional central venous catheter uses. In second inclining surface 176, angle \u03b812 on the second cross section is larger than angle \u03b822 on the second cross section. Preferably, the composition is a blood product selected from plasma, platelets, and red blood cells and the activator is an enzyme.