Filter Assembly
Filter Assembly - Related Videos
09:32
Evaluating the Effect of Coated Filters and Pre-Filters on the Infectivity and Concentration of Aerosolized Phi6 Virus
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2026
Here, we present a study to evaluate the anti-viral efficacy of copper- and silver-based surface coatings on air filters. Using a bioaerosol chamber and Phi6 bacteriophage, this method quantifies viral inactivation and mechanical filtration efficiency for self-sanitizing indoor air technologies.
01:27
Passive Filters
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2024
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources. Low-Pass Filters Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff frequency...
01:25
Active Filters
0 Views •
2025
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is: Where Af is the gain at low frequencies also known as the dc gain, s is the...
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
08:04
Use of a Filter Cartridge for Filtration of Water Samples and Extraction of Environmental DNA
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Cited by 133 •
2016
We describe a protocol for filtration of water samples with a filter cartridge and extraction of environmental DNA (eDNA) without having to cut open the housing to remove the filter. This protocol is developed for metabarcoding eDNA from fishes, but is also applicable to eDNA from other organisms.
FAQs
Pore size and membrane material determine which particles the assembled system retains as fluid or gas passes through. The membrane may therefore be selected according to whether the goal is to retain microorganisms, cells, aggregates, or other particles. These properties directly affect the composition of the filtered output and its suitability for later immunology or infection experiments.
Pressure or vacuum provides the driving force that moves a sample through the membrane. Without this force, the fluid or gas does not pass through the assembled unit as intended. The selected operating approach must therefore support movement through the membrane while preserving the separation needed for sterilizing solutions, clarifying samples, or preparing assay materials.
The surrounding components keep the membrane integrated into a usable pathway for the sample. Housing supports the membrane, connectors join the parts, and collection components receive the processed material. Secure connections are especially important because they reduce leakage and contamination, helping ensure that the material reaching downstream immunology or infection studies reflects the intended filtration step.
Configuration depends on whether the purpose is sterilizing buffers or culture media, clarifying a biological sample, or preparing a solution for a cell-based assay or microbial study. Each application requires retention of the relevant unwanted material while allowing the desired fluid to pass. Membrane pore size and material are therefore central configuration choices.
A basic workflow combines the filter membrane with its housing, connectors, and collection components, then secures the connections before introducing the sample. Pressure or vacuum drives the sample through the completed unit. Careful assembly at each connection limits leakage and contamination, which supports more reproducible filtration and more dependable downstream analyses.
These systems are useful when researchers need sterile buffers or culture media, clarified biological samples, or prepared solutions for cell-based assays and microbial studies. Filtration can remove microorganisms, cells, aggregates, or other particles according to the membrane properties. Reliable assembly helps protect the quality of these materials before they enter sensitive experimental workflows.