Page 5 - Filtration Resources
A compilation of application notes, case studies, white papers and other technical papers for various filtration applications.
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November 15, 2023A recent report by the World Health Organization (WHO) has revealed a concerning statistic: 99% of the global population finds themselves residing in environments where they are consistently exposed to heightened levels of air pollution.
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November 15, 2023Solvent recovery is an effective way to help recycle and reuse solvents to reduce fresh solvent consumption. Solvent purification can be achieved efficiently using membrane technology, where a semi-permeable solvent resistant membrane allows the passage of one compound (mostly the solvent), while it retains others (mostly the solute).
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October 18, 2023
Exosomes are tiny extracellular vesicles enclosed by membranes, which are created in the endosomal compartment of most eukaryotic cells. They can be found in biological fluids such as blood, urine, and saliva, and are involved in multiple physiological and pathological processes.Â
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October 18, 2023Polycarbonate membranes, known for their precision, durability, and an extensive range of applications, have been at the forefront of numerous groundbreaking discoveries and innovations. However, navigating the nuances of this unique track-etched membrane can be complex, often accompanied by questions.
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September 14, 2023
Because they have similar outward appearance, it is easy to presume that the various microporous membrane filters and flat sheet membrane filters offered by Sterlitech have similar pore structures. Some consider symmetry to be the epitome of beauty, but with respect to filtration, it’s all relative. In reality, there is a rich variety of pore structure morphologies resulting from the techniques and materials used to manufacture the membranes.
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May 12, 2023While there is currently a trend towards a more natural, unfiltered wine, filtration is broadly used by winemakers to improve the texture, clarity, and safety of wine. As we celebrate National Wine Day on May 25th, we thought we would take a closer look at membrane filtration in the winemaking process.
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February 17, 2023How to Handle and Preserve Samples? Non-representative particulate matter and debris such as leaves, twigs, fecal matter, insects and fish should be removed from the sample if their inclusion is not warranted.
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February 17, 2023Microplastics, tiny pieces of plastic measuring less than 5mm in diameter, are a growing concern due to their environmental persistence and negative impact on both environmental and human health. Microplastics originate from a wide range of industrial and consumer sources, including pharmaceuticals.
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January 18, 2023Suspended solids and other solid substances in wastewater. All freshwater sources contain solid matter, which can either be in the form of suspended solids or dissolved solids. The total of both of these forms is referred to as total solids (TS), which is the total amount of dried residual matter remaining after the water is evaporated without first having been filtered.
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October 13, 2022What is the purpose of spacers and shims used with the membrane test cells, and do I need them? Crossflow velocity (CFV) refers to the linear rate of flow of the feed solution as it passes tangentially over the surface of the membrane filter and is measured in meters or feet per second. Some of the feed solution will permeate through the membrane filter, while the balance will flow along the surface of the membrane and collect as concentrate that can be recirculated through the system. The crossflow velocity has a direct impact on the fouling rate and the occurrence of concentration polarization — where a concentration gradient forms in the fluid adjacent to the membrane surface.
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