A float glass sheet having a boron- and lithium-free glass composition comprising the following in weight percentage, expressed with respect to the total weight of glass: 65SiO.sub.278% 5Na.sub.2O20% 1K.sub.2O<8% 1Al.sub.2O.sub.3<6% 2CaO<10% 0MgO8%; K.sub.2O/(K.sub.2O+Na.sub.2O) ratio which is from 0.1 to 0.7; wherein the glass sheet has:

[00001]$0.01<.Math.\frac{{\left({\mathrm{Na}}_2.Math.O\right)}_{\mathrm{air}}}{{\left({\mathrm{Na}}_2.Math.O\right)}_{\mathrm{tin}}}-1.03.Math.3.$

The glass sheet may be a chemically-temperable soda-silica type glass composition suitable for mass production that shows reduced or controlled increased warping effect.

The invention relates to a float glass sheet having a boron- and lithium-free glass composition comprising the following in weight percentage, expressed with respect to the total weight of glass: 65SiO.sub.278% 5Na.sub.2O20% 0K.sub.2O<5% 1Al.sub.2O.sub.3<6% 0CaO<4.5% 4MgO12% a (MgO/(MgO+CaO)) ratio0.5 characterized in that the glass sheet has: (I). The invention corresponds to an easy chemically-temperable soda-silica type glass composition, which is more suited for mass production than aluminosilicate glass, and therefore is available at low cost, and with a base glass/matrix composition that is close to or very similar to compositions already used in existing mass production, and finally which shows reduced or controlled increased warping effect.

The present disclosure is to provide a method of producing a LTP or LATP crystal particle that has reduced impurity contamination, high crystallinity, and excellent dispersibility. The method of producing a LTP or LATP crystal particle according to the present disclosure includes: preparing glass containing, in molar ratio, 1+x of Li.sub.2O, where 0x1, x of Al.sub.2O.sub.3, 42x of TiO.sub.2, 3+y of P.sub.2O.sub.5, where 1y4, and from more than y to less than 3y of ZnO; subjecting, after the preparation of glass, the glass to thermal treatment for crystallization; and selectively eluting a substance other than a LTP or LATP crystal through acid treatment.

The present invention provides a cover glass that can be installed in an automobile so as to cover a display unit including a plurality of information areas, including a glass body that has a first surface facing the display unit side, and a second surface opposite to the first surface, and that includes a plurality of transmission areas respectively corresponding to the information areas.

A method for dealkalizing the inner face (5) of the wall (2) of a glass container (1), which wall (2) delimits a cavity (3) and an opening (4) providing access to the cavity (3), comprising supplying a glass container, the inner face of the wall of which has a temperature of at least 350 C., and introducing into the cavity, with the inner face having a temperature of at least 350 C., a treatment liquid containing a substance designed to react under the heat's effect to bring about dealkalization of the glass, the introducing comprising injecting, by way of an injection head (11) disposed at a distance from the opening in the container and outside the latter, a predetermined metered quantity of the liquid as a spray cone (C) that is sufficiently narrow for all of the metered quantity to pass into the cavity. Also, methods and installations for treating glass containers.

A scratch resistant alkali aluminoborosilicate glass. The glass is chemically strengthened and has a surface layer that is rich in silica with respect to the remainder of the glass article. The chemically strengthened glass is then treated with an aqueous solution of a mineral acid other than hydrofluoric acid, such as, for example, HCl, HNO.sub.3, H.sub.2SO.sub.4, or the like, to selective leach elements from the glass and leave behind a silica-rich surface layer. The silica-rich surface layer improves the Knoop scratch threshold of the ion exchanged glass compared to ion exchanged glass that are not treated with the acid solution as well as the post-scratch retained strength of the glass.

The present invention relates to a float glass for chemical strengthening, containing a bottom surface coming into contact with a molten metal at the time of forming and a top surface opposing the bottom surface, in which a difference (NNa.sub.2O.sup.2) determined by subtracting a square of a normalized Na.sub.2O surface concentration of the bottom surface which is a value obtained by dividing an Na.sub.2O concentration in the bottom surface by an Na.sub.2O concentration at a depth position of 100 m therefrom, from a square of a normalized Na.sub.2O surface concentration of the top surface which is a value obtained by dividing an Na.sub.2O concentration in the top surface by an Na.sub.2O concentration at a depth position of 100 m therefrom, is 0.040 or less.

Provided are a glass for anti-dazzle processing which has low dependency on the concentration of the processing liquid in carrying out the anti-dazzle processing, and an anti-dazzle glass using the same. A glass for anti-dazzle processing contains, as expressed by mass percentage on the basis of oxides, 60 to 75% of SiO.sub.2, 2.5 to 10% of A1.sub.2O.sub.3, 13 to 19% of Na.sub.2O, 0 to 1.8% of K.sub.2O, 0 to 12% of MgO, 0 to 9% of CaO, and 0 to 4% of ZrO.sub.2.

A scratch resistant alkali aluminoborosilicate glass. The glass is chemically strengthened and has a surface layer that is rich in silica with respect to the remainder of the glass article. The chemically strengthened glass is then treated with an aqueous solution of a mineral acid other than hydrofluoric acid, such as, for example, HCl, HNO.sub.3, H.sub.2SO.sub.4, or the like, to selective leach elements from the glass and leave behind a silica-rich surface layer. The silica-rich surface layer improves the Knoop scratch threshold of the ion exchanged glass compared to ion exchanged glass that are not treated with the acid solution as well as the post-scratch retained strength of the glass.

Ammonium sulfate treated prefilled syringes, and kits that include an ammonium sulfate treated prefilled syringe and a pharmaceutical composition comprising an aluminum-sensitive active agent, are described herein. Treating the inner surface of a glass syringe barrel with ammonium sulfate prior to filling the syringe with a desired aqueous diluent, such as water for injection, can limit the amount of aluminum that leach into the aqueous diluent during storage.