The Tube Revolver can be used in a variety of laboratory fields such as molecular biology, biochemistry, clinical, and histochemistry. Five standard interchangeable rotisseries are included and designed to be used with a variety of tube sizes. Holding four rotisserie paddles at a time, this instrument can mix a combination of different tubes. Each paddle can be independently adjusted from 0-90 degrees. The Digital Tube Revolver is programmed to mix at a variable speed between 10 to 40rpm and providing an oscillating mode to simulate hand mixing.