Slightly bell-shaped, thick, beaded top with a spout designed to have excellent pouring characteristics. They have been a basic element in research laboratories for many generations. Griffin beakers are characterised by their low shape and offer excellent mechanical strength and durability, while providing high resistance to chemical attack and thermal shock. A standard beaker can be used in almost any chemical experiment.
The purpose of beakers like these can range from preparing solutions and decanting liquids to performing simple reactions. The low-shaped beaked beaker was invented by John Joseph Griffin, so it is often referred to as a Griffin beaker. Standard beakers are also called «low form» and have a height of approximately one and a half times the diameter. Plastic beakers are used specifically for gamma spectral analysis and similar experiments. You may be wrong to use marks for accurate measurement, but a graduated cylinder or flasks are used to generate accurate measurements. Flat-shaped beakers are used to heat hot baths. Griffin and Philips beakers handle most of the daily use in the laboratory with measurement, containment, mixing and decanting tasks in the laboratory process. The Berzelius beaker is used for titration experiments where solutions are mixed to generate results. Some vessels are heat-resistant and allow chemicals to be heated and boiled, while other vessels will measure predominantly cold liquids. While the Philips may look like a Griffins beaker with a more detailed examination, you will see that the walls of a Philips are tilted and graduated towards the mouth of the beaker, so the mouth of the beaker is narrower than its base.Īnother important distinction that can be overlooked is the level of heat resistance of different beaker vessels. The fourth type is the Phillips beaker.While many beakers will have markings, crystallizer beakers generally will not have measuring marks. The third type is a flat vessel called a crystallizer.It is thin and its height is twice its diameter. The highest beaker is known as the Berzelius beaker.The standard beakers known as the Griffin beaker are lower beakers and their height is approximately 40% of their diameter.
0 kommentar(er)
