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Single-ended self-starting lamps are insulated with a mica disc and contained in a borosilicate glass gas discharge tube (arc tube) and a metal cap. [2] [3] They include the sodium-vapor lamp that is commonly used in street lighting. [4] [5] [2] [3] Borosilicate glass usually melts at about 1,650 °C (3,000 °F; 1,920 K).
Glass tubes are mainly cylindrical hollow-wares. Their special shape combined with the huge variety of glass types (like borosilicate, flint, aluminosilicate, soda lime, lead or quartz glass), allows the use of glass tubing in many applications.
1950: DURAN borosilicate glass tubing became and has remained the standard material in the production of laboratory glass items 2011: SCHOTT Tubing in Mitterteich, Germany, was the first to produce DURAN tubing with a length of 10 meters, making it the longest industrially produced glass tube 2015: SCHOTT in Mitterteich set a world record by ...
During manufacture, a length of borosilicate glass tube that has had the internal surface coated with a phosphor-containing material is filled with tritium. The tube is then sealed at the desired length using a carbon dioxide laser. Borosilicate is preferred for its strength and resistance to breakage.
The use of soft glass tubing has been fading, owing partly to environmental concerns and health risks but mainly to the adoption of borosilicate glass by most lampworkers, especially since the introduction of colored glasses compatible with clear borosilicate. Soft glass is sometimes useful because it melts at lower temperatures, but it does ...
A Fisher-Porter tube or Fisher-Porter vessel is a glass pressure vessel used in the chemical laboratory. The reaction vessel consists of a lipped heavy-wall borosilicate glass tube and a lid made from stainless steel.
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