Sample Retention System
Sample Retention System - Related Videos
03:10
Soil Core Sample Collection for Water Retention Property Analysis
0 Views •
2026
Source:Alessia J. Marchesan1, Guillermo Hernandez Ramirez11Renewable Resources, University of Alberta. This video demonstrates the technique for collecting a soil sample for hydraulic property analysis. The sampling area is cleared, and the top crust is evacuated. The sampling ring is then placed into the soil to collect the sample. The ring with the sample is then cleaned, labeled, packed, and transferred undisturbed for analysis.
06:19
Chinese Herbal Retention Enema for the Treatment of Ulcerative Colitis
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2025
This article demonstrates a Chinese herbal retention enema method for treating ulcerative colitis, which can effectively improve patients' clinical symptoms and quality of life.
07:44
Label-Retention Expansion Microscopy (LR-ExM) Enables Super-Resolution Imaging and High-Efficiency Labeling
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Cited by 8 •
2022
A protocol of label retention expansion microscopy (LR-ExM) is demonstrated. LR-ExM uses a novel set of trifunctional anchors, which provides better labeling efficiency compared to previously introduced expansion microscopies.
02:42
Determination of the Calcium Retention Capacity of Isolated Mitochondria
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2025
This video demonstrates the procedure to assess mitochondrial calcium retention capacity by monitoring real-time changes in fluorescence as mitochondria uptake calcium. This assay is useful for studying mitochondrial function and calcium-related processes, including apoptosis and neurodegenerative diseases.
11:01
Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention
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Cited by 12 •
2015
Our goals were to design, manufacture and test ferromagnetic stents for endothelial cell capture. Ten stents were tested for fracture and 10 more stents were tested for retained magnetism. Finally, 10 stents were tested in-vitro and 8 more stents were implanted in 4 pigs to show cell capture and retention.
FAQs
These controls protect different aspects of a biological specimen’s value. Secure containment helps protect the material, appropriate storage conditions help maintain its integrity, and documented tracking preserves its identity throughout handling. Because the controls operate together, a retained sample can remain suitable for later analysis, verification, or reference rather than becoming difficult to interpret or associate with its original experiment.
A specimen may remain physically usable yet lose its scientific value if its identity or handling history is uncertain. Documented tracking connects the retained material with its experimental context, allowing researchers to interpret later results appropriately. Maintaining that connection supports comparisons with new samples, confirmation of earlier findings, and investigation of unexpected observations.
Retained biological material gives researchers a reference point for checking whether later observations agree with an earlier experiment. Comparing archived and newly collected samples can help confirm findings or clarify unexpected results. This capacity strengthens reproducibility and quality assurance because conclusions can be examined against preserved material rather than relying only on original records or reported results.
Usefulness depends on maintaining sample integrity, preserving clear identity, applying suitable storage conditions, and documenting handling over the defined retention period. If any of these elements is weak, later interpretation becomes more difficult. A system is therefore effective not merely when it stores material, but when it preserves both the specimen and the information needed to understand it.
A basic workflow establishes suitable containers, assigns appropriate storage conditions, records the sample’s identity and handling, and maintains those records throughout the defined retention period. The retained material can then be retrieved for later analysis, verification, or reference. These steps create a consistent connection between the physical specimen and the study information associated with it.
Retention is especially valuable when researchers may need to verify findings, compare archived material with new samples, or investigate an unexpected result. It also matters when specimens are valuable, limited, or difficult to collect. Keeping material available after the initial analysis preserves an opportunity for follow-up work and supports stronger evaluation of biological conclusions.
A documented retention process provides organized material and handling information that can support regulatory compliance and later review. When results are unexpected, researchers can examine the retained specimen and compare it with new material to assess the finding. This creates a practical basis for checking whether an observation reflects the original sample or requires further investigation.