A beaker is usually a cylindrical container which is with a flat bottom. Most of them also have a spout for liquid pouring and a clear graduation. Beakers are generally in various sizes from milliliter to liters, in two types from low form to high form.
The spherical basin support is composed of upper support plate including stainless steel plate, lower support plate, spherical crown lining plate, Teflon slide plate (ie flat PTFE plate, spherical PTFE plate) and dustproof structure.