Water Wash
Water Wash - Related Videos
00:52
Washing, Drying, and Ignition of Precipitates
0 Views •
2024
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
06:46
Pulsed Laser Diode-Based Desktop Photoacoustic Tomography for Monitoring Wash-In and Wash-Out of Dye in Rat Cortical Vasculature
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Cited by 9 •
2019
A compact pulsed laser diode-based desktop photoacoustic tomography (PLD-PAT) system is demonstrated for high-speed dynamic in vivo imaging of small animal cortical vasculature.
01:23
States of Water
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2019
Water exists in any one of the three classical states: solid (ice), liquid (water), and gas (steam or water vapor). The state of water depends on i) the intermolecular forces that draw molecules together and ii) the kinetic energy that leads to movements that pull them apart. Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
07:06
Preparation of Washed Human Platelets for Quantitative Metabolic Flux Studies
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2025
Platelet metabolism is of interest, particularly as it relates to the role of platelet hyper- and hypoactivity in bleeding and thrombotic disorders. Isolating platelets from plasma is necessary for some metabolic assays; presented here is a method for isolating of intracellular metabolites from washed platelets.
07:42
The Morris Water Maze
0 Views •
2023
The Morris water maze is one of the most widely used behavioral tests for studying spatial learning and memory. In the initial phases of this task, rodents must swim to a platform to escape from a pool of water. The platform is then hidden under the water’s surface, so that the animal is required to remember it’s location in order to escape.This simple yet powerful maze design can be used to assay cognitive function, study animal models of neurodegenerative disease, and test potential drug...
FAQs
Removal depends on dissolution followed by transport into the surrounding wash liquid. Water contacts the residue, dissolves substances that are soluble in it, and carries them away during immersion or flow. Replacing the wash liquid is important because fresh water provides a new medium for dissolved material, improving removal over repeated contact.
Water can be hypotonic relative to a living cell, meaning it has a lower solute concentration than the cell interior. Water may therefore move into the cell by osmosis, producing osmotic influx and disrupting cellular structure. This risk makes water washing a condition-sensitive step when living cells are part of the sample.
Water quality, wash volume, contact time, and rinse number all influence the result. Insufficient volume or too few rinses may leave soluble carryover, whereas controlled contact conditions improve reproducibility. Keeping these variables consistent helps reduce background contamination and makes results from separate samples or experiments more comparable.
Repeated immersion exposes a sample to separate portions of wash liquid, while flowing water continuously transports dissolved material away from the contact area. Both approaches use dissolution and liquid exchange, but their practical removal patterns differ. Selecting and controlling one approach helps maintain consistent treatment across samples, surfaces, or containers.
First contact the biological sample, surface, or container with water by immersion or flow. Allow sufficient contact for soluble material to dissolve, then remove the wash liquid or allow it to flow away. Repeat with fresh water as needed, controlling volume, contact time, and rinse number to limit residual carryover.
In sample preparation, washing can remove soluble residues and carryover materials before microscopy or staining. Lowering unwanted background helps downstream visualization or processing remain more consistent. The wash conditions should still be selected with sample stability in mind, because hypotonic water can disrupt living cells rather than simply cleaning the preparation.
Water washing can clean laboratory surfaces and containers by dissolving and transporting soluble residues away from their materials. Repeated rinsing or water flow helps reduce carryover that could contaminate later work. Consistent water quality, volume, contact time, and rinse number are especially important when cleaned items will be used in biological analyses.
Careful control produces a more consistent reduction of soluble residues and unwanted carryover before downstream analysis. This can minimize background contamination and improve the reliability of sample preparation, microscopy, staining, or material cleaning. Because washing conditions affect both removal and cell integrity, the procedure must balance cleanliness with preservation of the biological sample.