Ringer's Pen-strep Solution
Ringer's Pen-strep Solution - Related Videos
07:27
Making Solutions in the Laboratory
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2023
The ability to successfully make solutions is a basic laboratory skill performed in virtually all biological and chemical experiments. A solution is a homogenous mixture of solute dissolved in bulk liquid known as the solvent. Solutions can be described by their solute concentration, a measure of how much solute is present per unit of solution. In this video, a step-by-step procedure for how to make a water-based, or aqueous, solution for biological applications is presented. The video...
09:49
Solutions and Concentrations
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2023
Source: Laboratory of Dr. Michael Evans — Georgia Institute of Technology A solution is a homogeneous mixture containing some components in small amounts, called solutes, and one component in a large amount, called the solvent. Solid-liquid solutions contain one or more solid solutes dissolved in a liquid solvent. Solutions are ubiquitous in chemistry: they are used to store and handle small amounts of material, carry out chemical reactions, and develop materials with controllable properties.
02:12
General Properties of Solutions
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2020
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed of varying amounts of two or more types of atoms or molecules. A mixture with a non-uniform composition is a heterogeneous mixture, whereas a mixture with a uniform composition is a homogeneous mixture. The components that make the homogeneous mixture are evenly spread out and thoroughly mixed. A solution is a homogeneous mixture that is...
02:16
Solution Formation
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2020
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride. This selective solubility...
02:39
Enthalpy of Solution
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2020
There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution: A decrease in the internal energy of the system (an exothermic change, as discussed in the previous chapter on thermochemistry) An increased dispersal of matter in the system (which indicates an increase in the entropy of the system, as you will learn about in the later chapter on thermodynamics) In the process of dissolution, an internal energy change often, but not always, occurs as heat is...
FAQs
The balanced salts help maintain osmotic conditions around cells, reducing the risk that nervous tissue or primary cells lose viability because of an unsuitable surrounding solution. This support is especially relevant during temporary handling or dissection, when samples are outside their usual culture environment. Maintaining these conditions can improve the consistency of material transferred to later culture or analysis.
Penicillin limits bacterial growth by disrupting cell-wall formation, while streptomycin acts on bacterial protein synthesis. Their different mechanisms provide complementary protection against contamination in biological preparations. This protection helps preserve samples during short handling periods, but the antibiotics do not make a preparation permanently contamination-free and cannot substitute for careful aseptic technique.
Nervous tissue and primary cells may need temporary support between collection, dissection, culture, and analysis. The solution helps preserve physiological conditions during that interval while limiting bacterial growth. Its role is therefore preparative rather than a complete replacement for a validated culture system. Researchers can use it to protect sample quality before subsequent experimental procedures.
Antibiotic supplementation can inhibit bacterial growth, but it does not eliminate every source of contamination or ensure that cells receive all conditions required for sustained culture. Aseptic handling remains necessary to protect the preparation, and longer-term experiments require validated culture conditions. Treating the solution as a complete safeguard could compromise sample integrity and reduce experimental consistency.
The solution can support a workflow in which nervous tissue is handled or dissected, maintained briefly, and then transferred for culture or analysis. Its use should be integrated with sterile technique and the requirements of the downstream procedure. Because the provided context specifies short-term maintenance rather than a complete protocol, exact handling conditions must be established for the intended preparation.
The described applications include nervous tissue, primary cells, and other biological samples that require handling, dissection, or temporary maintenance. In neuroscience, this makes the solution relevant before samples enter culture or undergo analysis. Its value is greatest when preserving cellular viability and limiting bacterial growth during preparation can affect the reliability of later observations.
Appropriate use can help preserve cellular viability, maintain osmotic balance, and reduce bacterial contamination during sample preparation. These effects may protect the quality of nervous tissue or primary-cell preparations and improve consistency between experiments. The solution supports sample integrity during an intermediate stage, but downstream results still depend on aseptic practice and suitable validated culture or analysis conditions.