1 Brands: Tums, Caltrate, and most other brands.  Absorption: Calcium carbonate is alkaline based. It requires extra stomach acid for better absorption, so it is best taken right after meals or with a glass of acidic juice such as orange juice.
Tempered glass is one of two kinds of safety glass regularly used in applications in which standard glass could pose a potential danger. Tempered glass is four to five times stronger than standard glass and does not break into sharp shards when it fails. Tempered glass is manufactured through a process of extreme heating and rapid cooling, making it harder than normal glass.
Tints are glass with metal oxides added to give it a specific hue. The tint or colouration is through the body of the glass and therefore darkens with an increase in thickness. Apart from aesthetics, tinted glass is used for reducing heat gain through the glazing system. Flat Polished is the neatest finish used for exposed edges of glass. 2  Mitred Glass has a 45 degree bevel on one side with an edge finish suitable for mitred silicone butt joints. 3  Round and Polished edge work gives the glass a curved edge for exposed perimeters.