Abstract: The present application is directed towards the handling of laboratory test tubes and more particularly to a specialized laboratory device that enables manual opening and capping of multiple test tubes with integral sealing caps, simultaneously. The Simplified Laboratory Test Tube Handling Device permits the user to actively process multiple test tube simultaneously, more simply, efficiently and rapidly than previously possible.

Abstract: The present application is directed towards the handling of laboratory test tubes. More particularly to a specialized laboratory device that enables manual opening, closing and capping of multiple test tubes with integral sealing caps. The Laboratory Test Tube Handling Device permits the user to perform multiple processes simultaneously more efficiently and rapidly than current practice.

Abstract: The present application is directed towards the handling of laboratory test tubes. More particularly to a specialized laboratory device that enables manual opening, closing and capping of multiple test tubes with integral sealing caps. The Laboratory Test Tube Handling Device permits the user to perform multiple processes simultaneously more efficiently and rapidly than current practice.

Abstract: A duct wall embracing the turbine of a gas turbine engine is cooled by impingement of air jets on to the outside of the wall. For control of the air flow the wall is surrounded by a chamber divided into inlet and outlet regions by a partition having spaced apart portions projecting towards the wall. The air jets emerge from nozzle openings in the free ends of the projections. Air rebounding from the wall enters the spaces between the projections and so does not interfere with the flow of fresh air thereby raising the efficiency of the heat exchange.