LOW EXPANSION BOROSILICATE GLASS
From the 16th Century to today, chemical research teams have used glass containers for a very basic reason the glass containers is transparent, almost invisible. And so the contents and the reaction are clear visible, But because chemists music heat, cool and mix chemical substances, ordinary glass is not always adequate or laboratory works.
Laboratory works requires apparatus made in a glass - which can readily be mould ed into any desired shape or from which offers maximum inertness when in contact with the widest range of chemical substances, which can withstand thermal shock with fracture and high temperature work without deforming, and which will be resilient enough to survive the everyday knocks to which it will be subjected in normal laboratory handling, washing and sterilizing processes.
Chemical Composition
glacierlab Glassware is a low alkali borosilicate composition. Its typical chemical composition is given under. It is virtually free of magnesia-lime-Zinc group and contains only traces of heavy metals.
Thermal Properties
As the Coefficient of thermal expansion of Borosilicate glass is low, the thermal stresses under a given temperature gradient are
consequently low and the glass can withstand higher temperature gradients and also sudden temperature changes/thermal shocks.
Minute scratching of glass surface can however reduce its thermal resistance. |
