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Q: Lots of lab glassware states the type of glass it is made of - Pyrex, Borosilicate Glass or Soda Lime.
What is the difference between these types of glass?
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Lab glassware can be soda lime, borosilicate or Pyrex glass - what is the differences between these types?[/caption]
A: Different types of glass have different chemical compositions, meaning Borosilicate glass and Pyrex are better suited to heating.
Borosilicate glass has a higher porportion of silicone dioxide than Soda Lime glass, as shown on the table below;| Compound | Borosilicate Glass - % content | Soda Lime Glass - % content |
| Â Silicon Dioxide SiO2 | Â 80.6 | 69 |
| Boron Trioxide B2O3 | 13 | 1 |
| Sodium Oxide Na2O | 4 | 13 |
| Aluminium Oxide Al2O3 | 2.4 | 4 |
