Glassware and Materials
Technical notes on specifying laboratory glassware and reagents, from the team that supplies laboratories across Indonesia.
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How laboratory glass behaves — composition, joints, thermal and chemical limits.
Glassware and Materials · August 3, 2026
Ground Glass Joint Sizes Explained: What 14/23 and 29/32 Mean
The two numbers are the cone diameter and the ground length in millimetres. Why one flask capacity ships in five different joints, and how to standardise a bench so the glass connects.
Glassware and Materials · April 15, 2026
Borosilicate 3.3 vs Soda-Lime Glass: What Boro 3.3 Buys You
Borosilicate expands a third as much as soda-lime, which is why it survives a hotplate and an autoclave. What it resists, what still destroys it, and when plastic is the better answer.
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