A convenient and most abundantly applied method to determine the growth state of a bacterial cell culture is to determine the optical density (OD) spectrophotometrically. Dilution of the samples, which is necessary to measure within the linear range of the spectrophotometer, is time-consuming and ...
a spectrophotometric measurement of light scattered by a suspension at a particular wavelength. Optical density measurements can be used to determine theBIOMASSconcentration in a suspension, when, for instance, monitoring theGROWTHof a culture ofMICROORGANISMS. It should be noted, however, that the mic...
data are needed of the density existing at any part on a radiograph, it may be measured by means of an instrument known as adensitometer. In this instrument the fraction of light transmitted is measured by a photo-cell, the output of which is read on a suitably scaled and calibrated ...
Turbidity or optical density (OD) measurement of the culture medium provides a fast, inexpensive, and simple method of estimating cell density in the absence of other solids or light absorbing compounds. From:Bioprocess Engineering,2013 About this page ...
Synonyms for optical density noun(physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation Synonyms absorbance photographic density transmission density Related Words density denseness natural philosophy ...
Spectrophotometric optical density is the most commonly used technique for determining the formation of chromophere and cell concentration in liquid culture. The formula for optical density (OD) of spectrophotometer is, OD=ALOD=AL Where, OD – optical density of spectrophotometer ...
1234 Performance Featuring low optical density all the way to high optical density (0 to 1 OD), the MAX sensor is also independent of aeration rate and impeller speed. Products We offer a range of sensor sizes,as well asbench-top and cabinet mount options. ...
Similar Δ OD (the change in optical density from the initial value to the value where the final population density is reached) responses are observed for temperature and water activity (adjusted using sodium chloride). Over most of the growth permissive ranges, the Δ OD remains high for both...
(λ)is the intensity at the beginning of the depth interval(z=z0), andμt(λ)is the attenuation coefficient. Under this model, the intensity exponentially decreases as light propagates through the tissue. The amount of attenuation within a given depth interval is known as the optical density...
Cell adhesion experiments are important in tissue engineering and for testing new biologically active surfaces, prostheses, and medical devices. Additionally, the initial state of adhesion (referred to as nascent adhesion) plays a key role and is current