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A laboratory rubber stopper or a rubber bung or a rubber cork is mainly used in chemical laboratories in combination with flasks and test tube and also for fermentation in winery. [ 1 ] [ 2 ] [ 3 ] Generally, in a laboratory , the sizes of rubber stoppers can be varied up to approximately 16 sizes and each of it is specific to certain type of ...
A cork borer, often used in a chemistry or biology laboratory, is a metal tool for cutting a hole in a cork or rubber stopper to insert glass tubing. [1] Cork borers usually come in a set of nested sizes along with a solid pin for pushing the removed cork (or rubber) out of the borer. The individual borer is a hollow tube, tapered at the edge ...
Harvesting of cork from the forests of Algeria, 1930. Cork is a natural material used by humans for over 5,000 years. It is a material whose applications have been known since antiquity, especially in floating devices and as stopper for beverages, mainly wine, whose market, from the early twentieth century, had a massive expansion, particularly due to the development of several cork-based ...
Cork is used in everything from the building of spacecraft to the insulation of homes, and it can replace rubber or plastic on just about anything that needs protection from heat or vibration.
Flasks which do not come with such stoppers or caps included may be capped with a rubber bung or cork stopper. Flasks can be used for making solutions or for holding, containing, collecting, or sometimes volumetrically measuring chemicals, samples, solutions, etc. for chemical reactions or other processes such as mixing, heating, cooling ...
These tubes are commonly sealed with a rubber stopper and often have a specific additive placed in the tube with the stopper color indicating the additive. For example, a blue-top tube is a 5 ml test tube containing sodium citrate as an anticoagulant, used to collect blood for coagulation and glucose-6-phosphate dehydrogenase testing. [5]
The hole is capped with a cork or cork-like stopper called a bung. Acceptable usage includes other access points that may be capped with alternate materials providing an air- or water-tight access to other vessels. For example, a bunghole on a combustion chamber can be used to remove slag or add coal. [1]
Any other names used for this item uses What is this item used for (e.g. volumetric measurement, heating, separation, etc.) notable_experiments Well-known experiments using this equipment inventor Inventor or inventors of the item (if any, if known) manufacturer If this is an item specific to a particular manufacturer, put the name here. model