Cross-contamination Prevention
Cross-contamination Prevention - Related Videos
05:56
Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model
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Cited by 27 •
2016
We demonstrate the effect of scleral crosslinking with riboflavin and UVA on an axial elongation rabbit eye. Axial elongation was induced in 13 day-old New Zealand rabbits (male and female) by suturing their right eye eyelids (tarsorrhaphy).
01:16
Contaminants and Errors
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2024
Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis. Another key consideration is determining the appropriate number of samples required to...
08:55
Making a Geologic Cross Section
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2023
Source: Laboratory of Alan Lester - University of Colorado Boulder Geologic maps were first made and utilized in Europe, in the mid-to-late 18th century. Ever since, they have been an important part of geological investigations all around the world that strive to understand rock distributions on the surface of the earth, in the subsurface, and their modification through time. A modern geologic map is a data-rich representation of rocks and rock-structures in a two-dimensional plan view. The...
10:20
Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
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Cited by 14 •
2015
Integration of microalgal cultivation with industrial flue gas will ultimately introduce heavy metals and other inorganic compounds into the growth media. This study presents a procedure used to determine the end fate and impact of heavy metals and inorganic contaminants on the growth of Nannochloropsis salina grown in photobioreactors.
08:45
Genetic Crosses
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2023
To dissect genetic processes or create organisms with novel suites of traits, scientists can perform genetic crosses, or the purposeful mating of two organisms. The recombination of parental genetic material in the offspring allows researchers to deduce the functions, interactions, and locations of genes. This video will examine how genetic crosses were influential in developing Mendel's three laws of inheritance, which form the basis of our understanding of genetics. One genetic crossing...
FAQs
Physical separation limits opportunities for materials to move between incompatible activities, samples, or work areas. Separate spaces, dedicated tools, and controlled workflows help prevent contact between samples and reduce unintended transfer by people or equipment. This arrangement is especially important when handling multiple experiments, because it preserves sample identity and makes contamination sources easier to identify and contain.
Aseptic technique controls how researchers handle samples, reagents, and equipment, while personal protective equipment creates a protective barrier during that handling. Using both approaches addresses contamination risks from different directions: technique supports sample integrity, and protective equipment helps limit transfer involving personnel. Their coordinated use supports safer work and more reliable biological experiments.
Sterilization or disinfection reduces contamination risks associated with equipment, surfaces, and work areas. The appropriate treatment becomes part of a controlled workflow rather than an isolated action, because clean equipment must also be handled and stored properly. Applying these measures supports sample integrity, lowers the chance of misleading results, and helps protect researchers from unintended biological exposure.
Clear labeling, controlled handling, and dedicated containers or tools help maintain the identity and separation of samples and reagents. A consistent workflow reduces opportunities for accidental transfer and makes it easier to trace where a problem may have occurred. These practices are useful in cell culture, molecular assays, microbiology, and clinical research, where sample mix-ups can compromise interpretation.
Appropriate controls provide a basis for recognizing results that may reflect contamination rather than the intended experiment. When controls are incorporated into a defined workflow, researchers can compare outcomes and investigate whether unwanted biological material or reagent transfer affected the assay. This strengthens interpretation, supports reproducibility, and helps distinguish a genuine experimental finding from a misleading result.
These practices are particularly important in cell culture, molecular assays, microbiology, and clinical research, where unwanted transfer can alter samples or distort experimental outcomes. Prevention also matters whenever researchers handle multiple biological materials, chemicals, or experiments in shared settings. By combining separation, controlled handling, protective equipment, and appropriate cleaning, laboratories can protect both data quality and personnel.