| abstract |
The simultaneous mixing of the contents in each of a plurality of containers each including a liquid, is effected by simultaneously causing the containers each to be rotated about its own axis first in one direction and then in another. In an embodiment, the containers (42) are test-tubes mounted in a turntable (18) with a disc-shaped drive member (56) frictionally engaging each tube and rotatable (independently of turntable) in one direction and then the other, to cause each tube (42) to be rotated about its own axis to mix the contents therein. The turntable assembly is particularly suitable for use with automatic analysis machines. <IMAGE> |