Cannula Filtration
Cannula Filtration - Related Videos
04:01
Cannula Implantation into the Cisterna Magna in a Mouse Model
0 Views •
2025
Source: Xavier, A. L. R., et al. Cannula Implantation into the Cisterna Magna of Rodents. J. Vis. Exp. (2018)This video demonstrates the procedure for implanting a cannula into the cisterna magna of an anesthetized mouse. The technique involves guiding a needle-mounted cannula through the dura into the inverted triangular cisterna magna and securing it for targeted delivery into the cerebrospinal fluid.
01:32
Filtration and Urine Formation
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2019
The function of the kidneys is to filter, reabsorb, secrete, and excrete. Every day the kidneys filter nearly 180 liters of blood, initially removing water and solutes but ultimately returning nearly all filtrates into circulation with the help of osmoregulatory hormones. This process removes wastes and toxins but is also crucial to maintain water and electrolyte levels. Most of these functions are performed by the tiny but numerous nephrons contained within the kidneys. Blood enters the renal...
01:26
Glomerular Filtration: Net Filtration Pressure
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2025
Glomerular filtration, a key process in the kidneys, is regulated by three main pressures: Glomerular blood hydrostatic pressure (GBHP), Capsular hydrostatic pressure (CHP), and Blood colloid osmotic pressure (BCOP). GBHP, with an average value of 55 mmHg, promotes filtration by pushing water and solutes through the filtration membrane. This is balanced by two opposing forces: CHP, a "back pressure" exerted against the filtration membrane by fluid already in the capsular space and renal tubule,...
00:53
Filtration
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2024
Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
01:29
Administering Oxygen by Nasal Cannula
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2025
Oxygen therapy is critical to patient care, especially for those struggling with respiratory issues. This intervention increases the oxygen concentration in the lungs, enhancing the amount of oxygen transported to the body's tissues. One standard method of delivering supplemental oxygen is through a nasal cannula, a non-invasive device that provides low to medium oxygen concentrations. Nasal Cannulas A nasal cannula is a lightweight tube split into two prongs placed in the nostrils, connected...
FAQs
A pressure difference moves the liquid from the source vessel through the porous filter and into the receiving vessel. Pressure applied to the source pushes the solution forward, whereas reduced pressure at the receiving vessel draws it through. This driving force must be sufficient for transfer while the filter retains insoluble particles and the liquid passes through.
An inert atmosphere limits contact between the solution and laboratory air during transfer. This is especially relevant for mixtures that are sensitive to air or moisture, because the technique can preserve their controlled environment while separating solids from the liquid. The atmosphere therefore supports both filtration and protection of chemically sensitive synthetic mixtures.
The cannula and porous filtration medium must be compatible with the solvent being transferred and with the amount of solid present. Incompatibility can compromise the filtration setup, while a heavy particle load can affect how readily liquid moves through the filter. Considering both factors helps maintain an effective separation and a clear receiving solution.
Place a compatible porous filter on the cannula, position the cannula between the source and receiving vessels, and establish the pressure difference needed for transfer. Either pressurize the source vessel or reduce pressure at the receiving vessel. As the liquid moves, insoluble material remains in the source while the filtered solution collects in the receiver.
Chemists can use Cannula Filtration to obtain a clear solution, separate a precipitated product, or remove an insoluble reagent from a reaction mixture. Its value is greatest when liquid transfer and solid removal must occur together. The approach also supports handling mixtures that should not be exposed directly to laboratory air.
The technique can deliver a filtered liquid to a separate vessel while maintaining an inert atmosphere during the transfer. This combination provides two outcomes: insoluble particles are left behind, and the mixture experiences less exposure to air or moisture. In synthetic chemistry, that makes it useful for isolating or continuing work with sensitive clear solutions.