Beaker
Beaker - Related Videos
06:41
Decellularizing Mammary Fat Pads: Deriving Extracellular Matrix Hydrogels from Mammary Fat Pads
0 Views •
2023
This video describes a technique of deriving extracellular matrix hydrogels by decellularizing murine mammary fat pads following ex vivo irradiation for in vitro studies. This hydrogel helps to mimic the in vivo breast tissue environment post-radiation treatment to study tumor cell behavior.
07:25
Identifying Alcohols - Instructor Prep
0 Views •
2020
Source: Lara Al Hariri at the University of Massachusetts Amherst, MA, USA Preparation of ReagentsExpand Here, we show the laboratory preparation for 10 students working in pairs, with some excess. Please adjust quantities as needed. Before you begin, put on a lab coat, safety glasses, and nitrile gloves, and set up a waste container for aqueous chromium, iron, and zinc waste. Note: Work in a fume hood because the reagents are acidic, toxic, and corrosive. The reagents undergo...
02:30
Macromolecules - Instructor Prep
0 Views •
2019
Solution Preparation ExpandCAUTION: It is important to always use care when handling reagents. For example, iodine will stain clothes and skin so wear gloves, goggles, and a lab coat when using this reagent. To prepare a 1 M glucose solution, begin by using a stir bar to dissolve 180.2 g of glucose in 500 mL of distilled water, increasing the volume to 1 L once the solute has dissolved in the smaller volume of solvent. To prepare a 10% cornstarch solution, first use a hotplate to boil 1 L of...
09:15
Column Chromatography - Student Protocol
0 Views •
2020
Source: Lara Al Hariri and Ahmed Basabrain at the University of Massachusetts Amherst, MA, USA Column Chromatography of Food DyeExpand In this experiment, you'll use column chromatography to separate green food coloring into its component blue and yellow dyes, called erioglaucine and tartrazine. First, you'll use 95% ethanol to elute the dye with a weaker affinity for silica gel. Then, you'll flush the second dye from the column with water. To recover the purified dyes, you will collect each...
08:16
Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
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Cited by 1 •
2017
Here, we present a protocol to demonstrate the generation of ice when water is introduced to a cold bath of brine, as a secondary refrigerant, at a range of temperatures well below the freezing point of water. It can be used as an alternative way of producing ice for industry.
FAQs
Beaker graduations provide only rough volume estimates, so they help indicate approximate liquid quantities during routine preparation but do not establish volumetric accuracy. This limitation matters when preparing solutions or combining reactants, because the vessel supports mixing and handling rather than precise measurement. Chemists should therefore treat its markings as guides for approximate amounts.
The wide mouth gives access for adding solids and using a stirring implement, while the cylindrical body provides space for liquids and suspended material to mix. Its flat base allows the vessel to stand during preparation. Together, these features make it practical for dissolving solids, stirring reactions, and preparing solutions without requiring a specialized shape.
Both glass and heat-resistant plastic can serve as beaker materials, but their suitability depends on the task and the vessel’s resistance to the intended conditions. Glass beakers are commonly associated with laboratory handling, while heat-resistant plastic provides another option for routine work. The material should be appropriate when samples are held, mixed, transferred, or warmed.
Its graduations are designed for rough estimation rather than precise measurement. A beaker can still hold liquids, combine components, and support solution preparation, but the indicated volume should not be treated as exact. Recognizing this distinction helps chemists select the vessel for routine preparation while avoiding inaccurate results in procedures that depend on volumetric precision.
A typical workflow is to place the solid and liquid in the vessel, use the open access to stir the mixture, and continue mixing until the solid dissolves. If appropriate for the procedure, the sample can also be warmed on a hot plate. The beaker then supports routine preparation without implying precise volume control.
The pouring spout provides a defined edge for directing liquid during transfer. After a mixture or sample has been held or prepared, the user can pour it into another vessel rather than transferring it with a separate operation. This feature complements the beaker’s role in routine handling, especially when approximate rather than volumetrically exact transfer is sufficient.
Beakers are useful when a procedure emphasizes holding, mixing, stirring, dissolving, warming, or transferring liquids rather than precise measurement. Their simple design and durable construction support routine preparation and classroom demonstrations. They are therefore suitable for visible, general-purpose chemical work in which approximate volumes and straightforward handling meet the experimental need.
A beaker can hold a liquid or mixture while it is warmed on a hot plate, supporting tasks such as preparing solutions or assisting dissolution. The vessel’s flat base allows it to stand during heating, while its construction may be glass or heat-resistant plastic. The procedure remains focused on warming and mixing, not exact volume measurement.