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Logarithmic dilution. A serial dilution is the step-wise dilution of a substance in solution, either by using a constant dilution factor, or by using a variable factor between dilutions. If the dilution factor at each step is constant, this results in a geometric progression of the concentration in a logarithmic fashion.
Fluorescein aqueous solutions, diluted from 10 000 to 1 part per million in intervals of ten-fold dilution. At 10 000 ppm the solution is a deep red colour. As the concentration decreases the colour becomes orange, then a vibrant yellow, with the final 1 ppm sample a very pale yellow.
The following formulas can be used to calculate the volumes of solute (V solute) and solvent (V solvent) to be used: [1] = = where V total is the desired total volume, and F is the desired dilution factor number (the number in the position of F if expressed as "1/F dilution factor" or "xF dilution"). However, some solutions and mixtures take up ...
A style guide, or style manual, is a set of standards for the writing and design of documents, either for general use or for a specific publication, organization or field. The implementation of a style guide provides uniformity in style and formatting within a document and across multiple documents.
An English writing style is a combination of features in an English language composition that has become characteristic of a particular writer, a genre, a particular organization, or a profession more broadly (e.g., legal writing).
Titer (American English) or titre (British English) is a way of expressing concentration. [1] Titer testing employs serial dilution to obtain approximate quantitative information from an analytical procedure that inherently only evaluates as positive or negative.
Comprehensive style guides, such as the Oxford Style Manual in the United Kingdom and style guides developed by the American Psychological Association, and the Modern Language Association in the United States, provide standards for a wide variety of writing, design, and English language topics—such as grammar, punctuation, and typographic ...
The Elements of Style (also called Strunk & White) is a style guide for formal grammar used in American English writing. The first publishing was written by William Strunk Jr. in 1918, and published by Harcourt in 1920, comprising eight "elementary rules of usage," ten "elementary principles of composition," "a few matters of form," a list of 49 "words and expressions commonly misused," and a ...