The concentration of citrate complexing agent in an electroless cobalt or nickel plating bath is determined by titrating a sample of the electroless plating bath containing a small concentration of free fluoride ion with a standard lanthanum nitrate solution. The device determines whether a sector identifier associated with the call includes a femtocell identifier. The temperature control of the fixed mold and the movable mold is performed only by switching ONOFF supply of the heating medium, and cooling with a cooling medium is not performed. The bypass resistors are connected in parallel to the unit cells or the unit cells connected in parallel. The implant composition of the present invention can be used for the repair, augmentation, and other treatment of bone. The quantum well device comprises alternately stacked n layers of quantum well layers and n layers of barrier layers, wherein the quantum well layers and barrier layers are alternatively doped with dopant, and n is a positive integer.