Abstract: The UV-blocking filter is a disk-shaped glass body made of borosilicate float glass, which has a layer of silver-containing diffusion paint adhering to it, which blocks ultraviolet light, so that the UV-blocking filter resists a high thermal load up to temperature of about 500° C. The preferred borosilicate float glass has a composition, in percent by weight, of SiO2, 81; B2O3, 13; ? Na2O+K2O, 4; and Al2O3, 2. The preferred diffusion paint is a red-brown mordant, which contains 44.0 percent by weight of copper-II-sulfate-5-hydrate, 25.0 percent by weight Ag2O, Fe, and Ba.

Abstract: The UV-blocking filter is a disk-shaped glass body made of borosilicate float glass, which has a layer of silver-containing diffusion paint adhering to it, which blocks ultraviolet light, so that the UV-blocking filter resists a high thermal load up to temperature of about 500° C. The preferred borosilicate float glass is BOROFLOAT® and the preferred diffusion paint is marketed by Schmelzfarben GmbH, Germany, under the product name, Red-brown mordant, and Type No. P 76 050.

Abstract: In order to avoid distortions or wall thickness variations in a glass wall, especially of a hollow glass body, formed by hot shaping, the hot shaping is performed by a vacuum forming or vacuum-deep drawing process. A hollow glass body and a measuring body sleeve for a neutrino detector made by this method are also described. The measuring body sleeve does not have distortions or wall thickness variations that can interfere with measurements.