Wednesday 27 March 2024

automatic translation

Wednesday 27 March 2024

automatic translation

    Laboratory glassware

    We know what the term glassware or laboratory glassware means.

    It simply means a series of objects and equipment, traditionally made of glass, used for experiments and other scientific works, especially in chemistry and biology laboratories.

    Currently some equipment is made with plastics for reasons of cost, strength and practicality, but glass is still used in many applications because it is relatively inert, transparent, more heat resistant than plastic, and relatively easy to process into the required shape.

    The glass that is usually used is borosilicate glass, known by its trade name Pyrex, because it is more resistant to thermal stress than ordinary glass.
    Less common is the use of fused quartz, which is capable of withstanding higher temperatures and is more transparent in ultraviolet and infrared.
    In some appliances, especially containers, brown-colored glass is used to protect the contents from the effect of external light.
    Only in particular cases it is necessary to use specific materials; for example containers for hydrofluoric acid must be made of polyethylene, because this acid corrodes the glass.

    The types of laboratory glassware used are truly varied.
    They have infinite applications, for example for measuring volume, for measuring and studying an electromagnetic spectrum. Or to contain or store samples or chemicals, to mix or prepare solutions or other mixtures.
    And again to heat, burn, cool, distill, carry out separations such as chromatography, to conduct synthesis, to grow biological organisms, etc.

    Nowadays most laboratory glassware is mass-produced, but in many large laboratories there are specialized scientific blowers to build particular pieces with shape and size.
    In addition to repairing expensive and difficult to replace glassware, the blower knows how to melt together several pieces of glass available separately such as joints, pipes, taps, intermediate pieces, and other glassware, forming complex objects such as vacuum lines, special reaction flasks, etc ...

    Source: wikipedia.it

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