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Quartzglass - RQ 200 |
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Made by RAESCH Quarz (Germany) GmbH, Werk Langewiesen |
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| RQ 200 - Transmission |
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RQ 200 is an undoped quartz glass which is besides others, especially designed for the production of high quality light sources . due to its transformation and softening temperatures and thermal conductivity figures comparable with GE 214.
RQ 200 is stable against thermal permanent loads of app. 1.000° C, provided the surface is free of impurities, such as e.g. finger sweat. Any impurities to be wiped off with an alcohol-impregnated cloth (or spirit). In case of impurity, the surface will divitrify which leads to a haze of the surface and a decrease of the mechanical stability. RQ 200 is not separate-doped and consequently has no UV-control. RQ 200 is produced as tubes and used as e.g. burner and exhaust tubes for the production of
.High-pressure discharge lamps
.Dermatological-cosmetic lamps
.Projector lamps, halogen lamps, headlamps
RQ 200 is available in differently heated levels, to guarantee specified maximum OH-contents accordingly
.RQ 200 unbaked (app. 90 . 120 ppm)
.RQ 200 V4 vacuum-baked (≤ 5 ppm)
.RQ 200 V40 vacuum-baked (≤ 1 ppm)
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