![]() ![]() Most beakers are accurate to within ~10%. These marks are not intended for obtaining a precise measurement of volume (a graduated cylinder or a volumetric flask would be a more appropriate instrument for such a task), but rather an estimation. They are designed with a slight shoulder for easy pouring and handling. For instance, a 250 mL beaker might be marked with lines to indicate 50, 100, 150, 200, and 250 mL of volume. Graduated Medium Round Bottle Beakers Phenolic with Solid PE Lined Cap Qorpak Bottle Beakers are excellent for use with biological and pathological specimens, but can also be used for storing industrial laboratory chemicals and reagents. Alternatively, a beaker may be covered with another larger beaker that has been inverted, though a watch glass is preferable.īeakers are often graduated, that is, marked on the side with lines indicating the volume contained. However, when in use, beakers may be covered by a watch glass to prevent contamination or loss of the contents, but allowing venting via the spout. The presence of a spout means that the beaker cannot have a lid. These beakers usually do not have a flat scale. Shop a large range of graduated beakers at MSC Industrial Supply. Flat beakers (C) are often called "crystallizers" because most are used to perform crystallization, but they are also often used as a vessel for use in hot-bath heating. Graduated beakers are robust, with a non-drip spout and ridged thumb-grip on handle. These are sometimes called Berzelius beakers and are mostly used for titration. Shatter resistant - reduce breakage & incidence of injury Chemically resistant to most acids, bases and many common solvents Autoclavable Square. "Tall-form" (B) beakers have a height about twice their diameter. Low form beakers are likely to be used in some way when performing a chemical experiment. These are the most universal character and are used for various purposes-from preparing solutions and decanting supernatant fluids to holding waste fluids prior to disposal to performing simple reactions. The common low form with a spout was devised by John Joseph Griffin and is therefore sometimes called a Griffin beaker. Standard or "low-form" (A) beakers typically have a height about 1.4 times the diameter. A graduated cylinder, also known as a measuring cylinder or mixing cylinder, is a common piece of laboratory equipment used to measure the volume of a. ![]()
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