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The major difference between our standard capillaries and conical capillaries lies in the different opening diameters on both ends. Whereas standard capillaries are manufactured with the redrawing-method conical capillaries are produced in a discontinuous process. Materials Soda-lime glass (AR, I860, PH360 etc.) gamma sterilized soda-lime glass Borosilicate glass (DURAN©, PYREX©, SIMAX© etc.) Neutral glass (FIOLAX© and DUROBAX©) Aluminum silicate glass (Schott 8252/8253) Lead glass (lead content up to 28%) Sealing glasses for various metals such as: kovar, molybdenum, steel, silver, platinum, palladium Process of Production During the production process of the conical capillaries a straight tube or capillary is heated and drawn. By drawing the capillary a pointy conical, tapered form, a so-called double-tip, is formed. The tip can be parted in the capillary’s smallest diameter and results in a larger diameter on one side which is determined by the blank used in the process, as...
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As a special service, we offer glass tubes and cylinders with calibrated inside diameters. Hereby, a special tool is used to bring the internal diameter precisely to the desired shape and dimension. Apart from the standard circular shape, the tubes can also be square or conical. Moreover, the outer tube diameter can be calibrated by means of cylindrical grinding. This grinding procedure results in a matt outer surface, which can be corrected by subsequent “technical polishing”.
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Conical tubes - Import exportNumber of results
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