Microsphere Calibration
Microsphere Calibration - Related Videos
07:43
Calibration Curves
0 Views •
2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Calibration curves are used to understand the instrumental response to an analyte and predict the concentration in an unknown sample. Generally, a set of standard samples are made at various concentrations with a range than includes the unknown of interest and the instrumental response at each concentration is recorded. For more accuracy and to understand the error, the response at each concentration can be repeated so an error...
08:06
Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
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Cited by 3 •
2017
Protocols for the synthesis of microspheres from polymers, the manipulation of microspheres, and micro-photoluminescence measurements are presented.
06:35
Experimental Glaucoma Induced by Ocular Injection of Magnetic Microspheres
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Cited by 25 •
2015
We present a method for inducing elevated intraocular pressure (IOP), by injecting magnetic microspheres into the rat eye, to model glaucoma. This leads to strong pressure rises, and extensive neuronal death. This protocol is easy to perform, does not require repeat injections, and produces stable long-lasting IOP rises.
03:02
Microsphere Polymerase Chain Reaction to Amplify Single-Stranded DNA
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2025
This video describes the technique of amplifying single-stranded DNA using oligonucleotide-coated polymer microspheres in a single-tube reaction. This process yields pure single-stranded DNA, which can be further used for DNA sequencing and microarray analysis.
03:54
Multiplexed Quantitative Bacterial Detection using Dye-Labeled Magnetic Microspheres
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2025
Source:Rhea Kang1, Gabby Mora1, Sherry Dunbar11Luminex, A DiaSorin Company, Austin.This video demonstrates multiplexed quantitative bacterial detection employing carboxylated magnetic polystyrene microspheres dyed into distinct sets. The procedure encompasses the formation of bead-bacteria complexes, magnetic separation, and flow-based analysis, enabling precise and simultaneous quantification of multiple bacteria in the same reaction well.
FAQs
Known reference standards provide a comparison point for evaluating microsphere measurements. By comparing observed size, fluorescence, density, or instrument response with the expected reference values, researchers can recognize systematic differences rather than treating every measurement as an inherent particle property. This comparison supports correction factors that make results more consistent across experiments and measurement systems.
Microspheres can be evaluated through several properties, including size, fluorescence, density, and instrument response. Agreement in one property does not establish accuracy for the others, because each measurement addresses a different aspect of particle characterization. Considering the property relevant to the experiment helps ensure that calibration corrects the measurement most likely to influence the biological or engineering conclusion.
Correction factors compensate for systematic variation identified during comparison with reference standards. Instead of allowing a consistent measurement difference to propagate through an experiment, researchers use the factor to adjust results toward a standardized value. This improves comparability among measurements and helps distinguish genuine differences in microspheres from variation introduced by the measurement process.
Calibrated measurements include evidence that observed particle properties or instrument responses have been checked against known standards and adjusted when systematic variation is present. Uncalibrated measurements may still show differences, but those differences are harder to interpret because measurement error can resemble a real change. Calibration therefore strengthens accuracy, reproducibility, and confidence in comparisons.
A basic workflow begins by selecting the property relevant to the experiment, such as size, fluorescence, density, or instrument response. Researchers then compare microsphere measurements with known reference standards, identify systematic variation, and establish appropriate correction factors. The adjusted measurements can subsequently support standardized characterization, imaging, flow cytometry, or assay development.
The process is useful whenever microsphere measurements support decisions about particle behavior or platform performance. Bioengineering applications include particle characterization, imaging, flow cytometry, assay development, drug-delivery systems, biomaterial testing, and diagnostic platforms. In these settings, calibration strengthens quality control and helps prevent measurement differences from being mistaken for meaningful biological or engineering effects.
Calibration provides a way to separate measurement error from changes associated with the biological system under study. When particle properties and instrument responses have been standardized, differences observed during imaging, flow cytometry, or assays are easier to evaluate as potential biological effects. This improves the reliability of conclusions drawn from microsphere-based experiments and platforms.