Crossword clues for reagent
reagent
- Chemical gear distributed by hospital department
- Chemical for testing is concerning a good man
- Chemical in analysis
- Substance used in test run on key worker
- Name of London street hiding a chemical
- Test chemical engineers by proxy
- Chemical mixture
- Chem lab substance
- Litmus paper, for one
- Assayer's substance
- Analyst's chemical
- Substance used for chemical analysis
- Substance in chemical analysis
- Oxalic acid, e.g
- Chemical used in analysis
- Chemistry lab selection
- Chromatography spray
- Assay need
- Assaying aid
- Chemical synthesis component
- A chemical agent for use in chemical reactions
- Chemical substance
- Analytical substance
- Active chemical substance
- Litmus, for one
- Laboratory chemical
- Substance used in chemical analysis
- Analytic chemical substance
- Chemical substance spy used against sappers?
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Reagent \Re*a"gent\ (r[-e]*[=a]"jent), n. (Chem.) A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test.
Douglas Harper's Etymology Dictionary
Wiktionary
n. (context chemistry English) A compound or mixture of compounds used to treat materials, samples, other compounds or reactants in a laboratory or sometimes an industrial setting.
WordNet
n. a chemical agent for use in chemical reactions
Wikipedia
A reagent is a substance or compound added to a system to cause a chemical reaction, or added to see if a reaction occurs. The terms reactant and reagent are often used interchangeably—however, a reactant is more specifically a substance consumed in the course of a chemical reaction. Solvents, though involved in the reaction, are usually not called reactants. Similarly, catalysts are not consumed by the reaction, so are not reactants. In biochemistry, especially in connection with enzyme-catalyzed reactions, the reactants are commonly called substrates.
In synthetic organic chemistry, reagents are compounds or mixtures—usually composed of inorganic or small organic molecules—that cause a desired transformation of an organic compound. Examples include the Collins reagent, Fenton's reagent, and Grignard reagents. In analytical chemistry, a reagent is a compound or mixture used to confirm the presence or absence of another substance, e.g. by a color change. Examples include Fehling's reagent, Millon's reagent, and Tollens' reagent.
When purchasing or preparing chemicals, reagent-grade describes chemical substances of sufficient purity for use in chemical analysis, chemical reactions or physical testing. Purity standards for reagents are set by organizations such as ASTM International or the American Chemical Society. For instance, reagent-quality water must have very low levels of impurities such as sodium and chloride ions, silica, and bacteria, as well as a very high electrical resistivity.
Usage examples of "reagent".
Perhaps she had the HI genes and there had been a mistake in the original specimen, a mix-up perhaps, or bad reagents, misapplication of current to the electrophoresis column: any sort of thing like that.
This reagent not only diminishes the excitability, but causes a very great prolongation of the period of recovery.
Dong touched a button, and the splicer spat out a cassette containing the material he had been working on and the reagents he had been using.
The heterogeneousness of the pulp of the papers, and the kind of size with which they are impregnated, lead to differences in the results which are observed with the same chemical reagents.
The requirements in this direction of some inks, however, though of rare occurrence, are to be met by the employment of other and particular reagents.
The three inks were happily mixtures containing different constituents, and so by utilizing the reagent of one which did not affect the other, gradually the encrusted upper inks were removed and later the original writing appeared sufficiently plain not only to be read but to identify it.
Oxidation is performed with greater convenience by wet methods, using reagents, such as nitric acid, which contain a large proportion of oxygen loosely held.
It was a pleasant little room, with three windows--north, west, and south--and bookshelves covered with books and scientific publications, and a broad writing-table, and, under the north window, a microscope, glass slips, minute instruments, some cultures, and scattered bottles of reagents.
The Vochysiaceae family, for example, accumulates aluminium from the soil, and its wood turns blue if we apply a special reagent.
We researchers, on the other hand, leave ours more casually open, swinging round us as we sprint down the corridor from office to lab, though that tradition is fading a bit now as biologists spend less and less time amongst chemical reagents and living things and more in the computer room watching complex multicoloured displays on the screens of the image analysis gear.
A lot of my own time is taken up with money, an almost obsessive issue for most British-based researchers these days: how to find the funds for the salaries of the post-docs, the grants to the students, the capital costs of new equipment, the consumable budget to buy the isotopes and the reagents.
Its empty reagent magazine was supposed to hold two dozen small vials of nucleotides and enzymes and other biochemicals.
But it was useless without the vials of nucleotides, polymerases, and other biochemical reagents.
You could probably break it down in stages by devising a cycle of reagents in just the right sequence, but that would take a complete processing plant specially designed for the job!
But these reagents, which I shall find, and for that matter, upon which I already have my hands, will not turn the living body to blue or red or black, but they will turn it to transparency.