Pipette Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Pipette and links to relevant pages within the course.
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| If a pipette is labeled (TC) " to contain " you would do the following: | View Page |
| Scenario #1 Pam is seated at the workbench where she routinely prepares dilutions using an automated pipette. She leans to the right and stretches over her rack of tubes each time she needs to change a pipette tip. Pam is working in an awkward body position because the pipettes are not in a convenient location and the space is not well organized.By changing the location of the pipettes to within her routine work area, she can avoid overstretching to reach the pipettes and avoid contorting her body into an awkward position that could eventually result in an MSD. As shown in the image, regularly used items should be close to the worker to avoid leaning forward and over-extending reach radius. Adjust your work space so that you can reach tools and equipment without unusual bending or twisting; arrange the work area properly within the "work zone".Avoid reaching more than 10 inches (25 cm) in front of the body for frequently used materials or 20 inches (50 cm) for items that are used occasionally. | View Page |
| Random Error Random error occurs because of extremely small variables in testing that are not easily managed, such as strictly defined sample size or exact pipette delivery. Random error affects the precision of a test. Random error also occurs when an inappropriately collected specimen is used for testing.
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| Which of the following statements are true for the viscosity of semen? | View Page |
| Viscosity Most semen is somewhat viscous. Liquefaction should be complete before viscosity is assessed.
Semen viscosity can be determined by trying to draw the specimen into a wide bore pipette. Normal semen can be dropped from a pipette in single droplets. Some laboratories report viscosity on a scale from 0-4. Others report the results as "non-viscous", "slightly viscous", "very viscous" and so forth.
A specimen that is more viscous than normal after liquefaction may have reduced sperm motility. During sexual intercourse, hyperviscosity can prevent the sperm from reaching the cervix. | View Page |
| The patient's red cell eluate initially was unidentifiable, reacting weakly with only two panel cells that did not fit a pattern. Once anti-Jka was identified, a check of the eluate panel results showed that both reactive cells were Jk(a+b-) but two other JkaJka panel cells did not react.Consider the question below, then click on the answer. | View Page |