Laboratory Glassware

A beaker suits general mixing, while a volumetric flask or graduated cylinder is needed for precise volume measurement.

Borosilicate glass handles direct flame and rapid temperature changes far better than standard soda-lime glass.

Stock a spread of sizes, from small test tubes to large flasks, to cover the full range of practical work.

Distillation and reflux setups need matching ground glass joints between flasks, condensers, and adapters to form a sealed system.

Borosilicate glass resists thermal shock and chemical attack far better than soda-lime glass, which is why it's the standard for lab glassware exposed to heat or reactive chemicals.

Pyrex is a brand name, borosilicate is the material. Laboratory Pyrex is borosilicate, so in a lab context the two mean much the same thing. Some modern Pyrex kitchenware is tempered soda-lime glass, which does not handle thermal shock nearly as well.

Borosilicate can, soda-lime cannot. Borosilicate is made for thermal stability and handles Bunsen burner heating, hotplates and autoclaving. Soda-lime expands too much and cracks under uneven or rapid heating, so it is for storage only. Heat any glassware gradually, because thermal shock will crack borosilicate too.

Most borosilicate glassware can be autoclaved, but always check the specific product's temperature rating first, especially for graduated or printed pieces.

A dedicated cleaning brush with warm detergent works for most residue, though stubborn stains may need a longer soak or a specialised lab glass cleaner.

Discard any chipped or cracked glassware immediately, since a compromised piece is far more likely to fail under heat or pressure during use.

No, ground glass joints are mainly needed for sealed setups like distillation or reflux. Basic measuring and mixing work is fine with standard open glassware.