TEST TUBE WASHER

A test tube washer adapted for insertion into a test tube for producing a laminar wash flow over selected interior surfaces of the test tube and aspirating the rinse solution into a container, including a probe assembly having an outer tubular probe conformed to be received in a test tube, a cap closing off the bottom end of the outer probe, an inner or aspiration tube connected at the bottom end to the interior surface of the cap for concentric mounting within the outer probe, an aspiration orifice formed in the cap to communicate between the outer surface thereof and the inner cavity of the aspiration tube, A handle attached to the top ends of both the outer probe and the aspiration tube, drain orifices formed in the periphery of the outer probe immediately above the cap, a first bore communicating with the outer probe and adapted to connect to a rinse solution container, a second bore communicating with the aspiration tube and adapted to connect to a vacuum pump for withdrawing the rinse solution and a first and second vent port respectively communicating with the first and second bores for selective venting thereof to the atmosphere.