Abstract: A glass rod includes: a glass including a glass composition, wherein the total relative length variation of the semi-major axis tlvmajor is determined as an absolute difference between (a) a smallest semi-major axis length Imajor(n) and (b) a largest semi-major axis length Imajor(n), normalized by the average semi-major axis length lmajor(a); wherein the 50 equidistant cross-sections are positioned along the length lrod of the glass rod, starting at a position of 0.01*lrod as a first position and employing a plurality of additive increments of 0.02*lrod for each subsequent position; wherein the relative local area variation lav is determined as an absolute difference between (c) a cross-sectional area that has the largest semi-major axis length Imajor(n) and (d) an average value of the cross-sectional areas, normalized by an average value of the cross-sectional areas; wherein the quality index (tlvmajor+lav) is 0.090 or less.

Abstract: A method of making glass products includes: heating material to obtain a glass melt; heating the glass melt in a melting tank having a melting tank bottom, the glass melt having a melt volume, a melt surface, and a viscosity of 102 dPas at a temperature above 1580° C. The glass melt is heated such that at least some of the glass melt has a viscosity of 102.5 dPas or less. An amount of thermal energy introduced directly into the melt volume is more than 60% of a total amount of thermal energy introduced into the glass melt. A maximum difference between a temperature at a location on the melt surface and a temperature at a location at the melting tank bottom vertically underneath the location on the melt surface is such that a difference in glass melt densities is less than 0.05 g/cm3 per meter distance between the locations.

Abstract: An apparatus for forming glass tubes is provided. The apparatus includes a Danner-pipe, a heating device, and a heating chamber having the Danner-pipe and the heating device arranged therein. The Danner-pipe is inclined with respect to a horizontal plane by a Danner-angle. The heating device is inclined with respect to the horizontal plane by a heating-angle. The Danner-angle and/or the heating angle are in a range of 1° to 45°.

Abstract: A chemically temperable borosilicate glass article has a low boron content and a corresponding Na2O content. The articles have good diffusivities and hydrolytical resistance values. When chemically tempered, the borosilicate glass article exhibits a compressive stress CS >400 MPa and a penetration depth DoL >20 ?m. A pharmaceutical primary packaging including the borosilicate glass article is also disclosed.

Abstract: A glass includes SiO2 in an amount of at least 60.0 wt.-% and an amount of MoO3 from 0.1 ppm to 30.0 ppm. Molybdenum is present in such oxidation states that a transmittance at a wavelength of 260 nm is at least 65.0% at a reference thickness of 1.0 mm.

Abstract: A glass includes SiO2 in an amount of at least 60.0 wt.-% and an amount of WO3 from 0.1 ppm to 60.0 ppm. Tungsten is present in such oxidation states that a transmittance of the glass at a wavelength of 260 nm is at least 75.0%.

Abstract: Glasses and glass products suitable for pharmaceutical packaging are provided and methods of making and using such glass and glass products are provided. The glasses combine chemical temperability with very good hydrolytic resistance as well as reduced color tinge. The invention also includes methods for the production of such glasses and their uses.

Abstract: An apparatus for forming glass tubes is provided. The apparatus includes a Danner-pipe, a heating device, and a heating chamber having the Danner-pipe and the heating device arranged therein. The Danner-pipe is inclined with respect to a horizontal plane by a Danner-angle. The heating device is inclined with respect to the horizontal plane by a heating-angle. The Danner-angle and/or the heating angle are in a range of 1° to 45°.

Abstract: A glass has a transmittance at a wavelength of 220 nm of at least 30% and a transmittance at a wavelength of 200 nm of less than 4.0%, the glass having a total platinum content of less than 3.5 ppm. A device and a sterilizer include a light source configured to output ultraviolet light and a lamp cover covering the light source and including the glass.

Abstract: Glasses and glass products suitable for pharmaceutical packaging are provided and methods of making and using such glass and glass products are provided. The glasses combine chemical temperability with very good hydrolytic resistance as well as reduced color tinge. The invention also includes methods for the production of such glasses and their uses.

Abstract: A method for producing a glass product is provided. The method includes providing a glass melt; hot forming the glass melt to obtain a glass product; and transferring the glass melt from a first region to a second region through a tube. The tube has a part that protrudes with a length into the glass melt in the first region. The part being at a distance from an inner base lying directly thereunder. The length and the distance are configured so that little defective glass gets into the tube and is transferred to the second region.

Abstract: The invention relates to a process for producing alkali metal-rich aluminosilicate glasses having a content (in mol % based on oxide) of alkali metal oxides of 4-16 mol %, of Al2O3 of at least 4 mol % and of B2O3 of 0-4 mol %, wherein 0.15 mol % to 0.9 mol % of chloride(s) and at least one refining agent from the group of sulfate(s) (reported as SO3), CeO2 are added to the glass batch and wherein the sum total of refining agents added in the batch is 0.17 mol % to 1.3 mol %.

Abstract: A glass includes a composition which is characterized by the following constituent phases of the glass: 20-80 mol % silicon dioxide; 0-40 mol % wollastonite; 0-30 mol % cordierite; 0-40 mol % anorthite; 0-40 mol % strontium-feldspar; 0-20 mol % celsian; 0-40 mol % hardystonite; 0-10 mol % titanite; and 0-15 mol % gittinsite. Where the composition is specified in mol % relative to oxides, the glass contains less than 11.5 mol % Al2O3 and less than 5000 ppm (molar, relative to the oxides) of each of B2O3, Li2O, Na2O, K2O, Rb2O and Cs2O. A calculated value for the removal rate according to ISO 695 is not more than 81.9 mg/(dm2 3 h) and a calculated value for the removal rate in acid according to DIN12116 is less than 3.5 mg(dm2 6 h).

Abstract: A chemically temperable borosilicate glass article has a low boron content and a corresponding Na2O content. The articles have good diffusivities and hydrolytical resistance values. When chemically tempered, the borosilicate glass article exhibits a compressive stress CS >400 MPa and a penetration depth DoL >20 ?m. A pharmaceutical primary packaging including the borosilicate glass article is also disclosed.

Abstract: A pharmaceutical packaging is provided including a glass, comprising at least the following components (given in mol % on oxide basis): SiO2: 5 9-84, Al2O3: 7-18.5, CaO: 1-25, SrO: 0-6.5, BaO: 0-5, ZrO2: 0-3, TiO2: 0-5, B2O3: 0-1, wherein the ratio (CaO+SrO+BaO)/Al2O3<2.8, wherein the ratio (CaO+SrO+BaO)/SiO2?0.39, wherein the hydrolytic resistance according to DIN ISO 720 is class HGA 1, and wherein the glass, apart from unavoidable contaminations, is free of alkali oxides and magnesium oxides.

Abstract: The invention relates to a process for producing alkali metal-rich aluminosilicate glasses having a content (in mol % based on oxide) of alkali metal oxides of 4-16 mol %, of Al2O3 of at least 4 mol % and of B2O3 of 0-4 mol %, wherein 0.15 mol % to 0.9 mol % of chloride(s) and at least one refining agent from the group of sulfate(s) (reported as SO3), CeO2 are added to the glass batch and wherein the sum total of refining agents added in the batch is 0.17 mol % to 1.3 mol %.

Abstract: A zirconium-free neutral glass is provided that finds use in the pharmaceutical sector. The glass has a combination of alkali metal oxides of sodium, potassium and optionally lithium, and a controlled amount of aluminum oxide, which provides a zirconium-free and low-boron neutral glass having good hydrolytic stability, good acid and alkali stability and good devitrification properties. The glass includes the following components in % by weight: SiO2 ?72-82, B2O3 ??3-8, Al2O3 ??5-8, Na2O 2.5-5.5, K2O 3.6-8.4, Li2O ??0-0.7, MgO ??0-0.7, CaO ??0-0.4, and TiO2 ??0-5, wherein Li2O + Na2O + K2O 6.8-14.6, and K2O/Na2O ratio 0.7-3.4.

Abstract: A pharmaceutical packaging is provided including a glass, comprising at least the following components (given in mol % on oxide basis): SiO2:59-84, Al2O3:7-18.5, CaO:1-25, SrO:0-6.5, BaO:0-5, ZrO2:0-3, TiO2:0-5, B2O3:0-1, wherein the ratio (CaO+SrO+BaO)/Al2O3<2.8, wherein the ratio (CaO+SrO+BaO)/SiO2?0.39, wherein the hydrolytic resistance according to DIN ISO 720 is class HGA 1, and wherein the glass, apart from unavoidable contaminations, is free of alkali oxides and magnesium oxides.

Abstract: Borosilicate glasses, preferably for use in the pharmaceutical sector, are provided. The borosilicate glasses are outstandingly suitable for the use as pharmaceutical primary packaging, such as phials or ampoules, since the aqueous or water-containing medicaments kept in the containers do not attack the glass significantly, and so the glass releases no, or only few, ions. The borosilicate glasses have the following composition in % by weight or consist thereof: SiO2 71-77; B2O3 9-12; Al2O3 5.5-8; Na2O 6-8; K2O 0.1-0.9; Li2O 0-0.3; CaO 0-1.5; BaO 0-1; F 0-0.3; Cl- 0-0.3; and MgO + CaO + BaO + SrO 0-2.

Abstract: A zirconium-free neutral glass is provided that finds use in the pharmaceutical sector. The glass has a combination of alkali metal oxides of sodium, potassium and optionally lithium, and a controlled amount of aluminium oxide, which provides a zirconium-free and low-boron neutral glass having good hydrolytic stability, good acid and alkali stability and good devitrification properties. The glass includes the following components in % by weight: SiO2 ?72-82, B2O3 ??3-8, Al2O3 ??5-8, Na2O 2.5-5.5, K2O 3.6-8.4, Li2O ??0-0.7, MgO ??0-0.7, CaO ??0-0.4, and TiO2 ??0-5, wherein Li2O + Na2O + K2O 6.8-14.6, and K2O/Na2O ratio 0.7-3.4.