A multichamber dispensing device for dispensing a mixture consisting of a plurality of substances includes a receptacle unit with several chambers that are aligned parallel in relation to each other. A control device may control the arm to engage with the bars, and includes a lever to maintain the arm in engagement with the bars. In addition, the estimate incorporates the use of table filters when indicated such that table filters are applied prior to determining the size of the tables in the operation, as well as including equivalent columns into the list of columns that are a part of the Group-By operation. This invention discloses a process for coupling a living rubbery polymer that comprises reacting the living rubbery polymer with coupling agent selected from the group consisting of tin halides and silicon halides in the presence of a lithium salt of a saturated aliphatic alcohol. The connector is distinctive in that the interface between the male and female members comprises a facing surface of a ceramic sleeve, ceramic insert or ceramic member, such that the male and female members are galvanically isolated. The use of this method enables efficient production of a template DNA for expression and purification of a protein.