Optical density definition

Optical density or "OD" means a logarithmic expression of the optical attenuation afforded by a material.
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Optical density. (OD) means a logarithmic expression of the optical attenuation afforded by a material. (incident power)
Sample 1Sample 2

Examples of Optical density in a sentence

  • Optical density at 450 nm is read using an ELISA microtiter plate reader.

  • All reagents must be mixed without foaming.• Once the test has been started, all steps should be completed without interruption.• Use new disposal plastic pipette tips for each standard, control or sample in order to avoid cross contamination.• Optical density is a function of the incubation time and temperature.

  • All reagents must be mixed without foaming. Once the test has been started, all steps should be completed without interruption. Use new disposal plastic pipette tips for each standard, control or sample in order to avoid cross contamination. Optical density is a function of the incubation time and temperature.

  • Optical density values are means ± SE and expressed in arbitrary units.

  • All reagents must be mixed without foaming.− Once the test has been started, all steps should be completed without interruption.− Use new disposal plastic pipette tips for each standard, control or sample in order to avoid cross contamination.− Optical density is a function of the incubation time and temperature.

  • Treated cells were stained and the dye was extracted as indicated in section2.5. Optical density reading was used as indication of cell proliferation (the high optical density represents more cell proliferation).

  • Optical density of the supernatant was evaluated by spectrophotometry at 450 nm.

  • Candidate hybridomas suitable for mon- oclonal antibody production were selected on the basis of good positive results (Optical density > 1.0 at 405 nm) and minimal cross-reactivity with the other selected bacteria.

  • Optical density was measured on a microplate ELISA reader (EFOS 9305, Russia) at a wavelength of 450 nm against a reference of 620 nm.

  • Optical density of the supernatant was evaluated by spectrophotometry at 540 nm wavelength.

Related to Optical density

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