| Glass Tube |
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| laboratory glassware | |
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Glass tubes can be cut by scoring with a diamond cutter, and bending, giving a break with a clean edge. The ends are preferably flame polished before use to remove the edge. Hose barbs can be added to give a better grip and seal when used with rubber tubing. Glass tubes can be bent by heating to red heat in a non-luminous Bunsen flame. The glass tubes are fitted to rubber Bung s by drilled holes. In the past, scientists constructed their own laboratory apparatus prior to the ubiquity of interchangeable Ground Glass Joint s. Today, commercially available parts connected by ground glass joints are preferred; where specialized glassware are required, they are made to measure using commercially available glass tubes by specialist Glassblower s. For example, a Schlenk Line is made of two large glass tubes, connected by Stopcocks and smaller glass tubes, which are further connected to rubber hoses. |
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