Laboratory apparatus and instruments, namely, bioreactors for cell culturing, and parts and fittings therefor; cell culture vessels for laboratory use, namely, cell culture dishes, cell culture flasks, bioreactors for cell culturing; cell incubators for laboratory use and their parts, fittings and accessories; cell culture apparatus for laboratory use, namely, a system comprising primarily of incubators, liquid dispensers, and centrifuges; centrifugal separators and dispensers for laboratory ...