dilution

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dilution

 [di-loo´shun]
1. reduction of concentration of an active substance by admixture of a neutral agent.
2. a substance that has undergone such a process.
serial dilution a set of dilutions in a mathematical sequence. In microbiological technique, serial dilutions are used to obtain a culture plate that yields a countable number of separate colonies. From this, a calculation of viable cells in the original suspension can be made, as a colony picked for pure culture.

di·lu·tion

(dī-lū'shŭn),
1. The act of being diluted.
2. A diluted solution or mixture.
3. In microbiologic techniques, a method for counting the number of viable cells in a suspension; a sample is diluted to the point where an aliquot, when plated, yields a countable number of separate colonies.

dilution

/di·lu·tion/ (di-loo´shun)
1. reduction of concentration of an active substance by admixture of a neutral agent.
2. a substance that has undergone dilution.
3. in homeopathy, the diffusion of a given quantity of a medicinal agent in ten or one hundred times the same quantity of water.dilu´tional

serial dilution  a set of dilutions in a mathematical sequence, as to obtain a culture plate with a countable number of separate colonies.

di·lu·tion

(di-lū'shŭn)
1. The act of being diluted.
2. A diluted solution or mixture.
3. microbiology A method for counting the number of viable cells in a suspension; a sample is diluted to the point at which an aliquot, when plated, yields a countable number of separate colonies.

dilution (di·lōōˑ·shn),

n decreasing the concentration; for essential oils used in aromatherapy, the dilution range is between 1% and 5%.
dilutions, ultra-high,
n.pl in homeo-pathy, solutions of substances that have been repeatedly agitated and diluted.

dilution

1. reduction of concentration of an active substance by admixture of a neutral agent.
2. a substance that has undergone dilution.

limit dilution
a method of obtaining a pure culture of bacteria or virus by subculturing from the highest dilution in which the organism is demonstrably present.
serial dilution
1. the progressive dilution of a substance or infectious agent in a series of tubes or wells in a tray in predetermined ratios, e.g. 2-fold or 10-fold dilution steps.
2. a method of obtaining a pure bacterial culture by rapid transfer of a small amount of material from one nutrient medium to a succeeding one of the same volume.