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Turbidimetry (the name being derived from turbidity) is the process of measuring the loss of intensity of transmitted light due to the scattering effect of particles suspended in it. Light is passed through a filter creating a light of known wavelength which is then passed through a cuvette containing a solution.
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air.The measurement of turbidity is a key test of both water clarity and water quality.
Turbidimetric inhibition immuno assay (TINIA) is a type of immunoassay that uses turbidimetry as the measurement principle and is used for many commercial immunoassays, e.g. measurement of HbA1c%, [1] Digoxin etc. in whole blood sample in several commercial assays employ this principle.
McFarland standards. No. 0.5, 1 and 2. In microbiology, McFarland standards are used as a reference to adjust the turbidity of bacterial suspensions so that the number of bacteria will be within a given range to standardize microbial testing.
Illustration of hook effect adapted from Schiettecatte et al. [1] The hook effect refers to the prozone phenomenon, also known as antibody excess, or the postzone phenomenon, also known as antigen excess.
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In microbiology, the minimum inhibitory concentration (MIC) is the lowest concentration of a chemical, usually a drug, which prevents visible in vitro growth of bacteria or fungi.
IgE was simultaneously discovered in 1966 and 1967 by two independent groups: [12] by Kimishige Ishizaka and his wife Teruko Ishizaka at the Children's Asthma Research Institute and Hospital in Denver, Colorado, [13] and by Gunnar Johansson and Hans Bennich [] in Uppsala, Sweden. [14]