Abstract: A parallel centrifugal tubular slide structure mainly set a plurality of tubular slide bodies positioned in parallel on a plate. A bigger mixture space is at one end of each tubular slide body and a thin slide stiffener at the other end thereof. At the middle of the tubular slide body forms a middle space separated from the mixture space and the thin slide stiffener by two sloping baffle plates, of which the two ends have chinks to enable test solution flows through. The invention enables the result of test solutions to be seen by sight applying centrifugal force to accelerate the separation operation of test solutions in mixture spaces of test tubes. Moreover, the invention enables the test solutions to be observed by microscope making test solutions flow into the opposite direction of the thin slide stiffener by holding the tubular slide bodies for switching in reverse.

Abstract: A test tube rack a top tray bridging and jointing a bottom tray set, having several rows of inserting holes for and receiving cups for test tubes. Through holes are disposed on a flexible sandwich plate on the upper portion of the bottom tray set. When inserted, the test tubes may be depressed or placed gently with various heights for convenient selecting, temporary storing or further conducting the screening and distinguishing tests.

Abstract: A test tube rack with the inserting structure comprises of a top tray bridging and jointing a set of bottom tray on the bottom side as the two main parts; several rows of inserting holes for the test tubes are mounted on the top tray surface; through holes with the same apertures vertically and relatively to the said inserting holes for the test tubes are disposed on the flexible sandwich plate on the upper portion of the bottom tray set; the lower portion of the bottom tray set is mounted with the receiving cups with the same apertures extending downwards and relatively to the said through holes to allow the bottoms of the test tubes to enter and stand inside the receiving cups; when inserting, the test tubes depressed or placed gently stand with various heights for convenient selecting, temporary storing or further conducting the screening and distinguishing.