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Sterlitech now offers our full range of microfiltration and ultrafiltration flat sheet membranes cut in disk sizes compatible with our polymeric stirred cells. These include membranes from SUEZ (GE Osmonics), Synder Filtration, and Microdyn Nadir. These discs are available in 25, 43, 62, 76, 90, and 150 mm diameters.

Disk filters in combination with the low-pressure polymeric stirred cells can be used as a fast and easy method for a wide variety of filtration/separation applications, such as performing filtration of fluids with heavy particle loads or concentrating biological components and macrosolutes (DNA, RNA, protein, etc.).  Other examples of applications for low-pressure filtration include cell harvesting, diafiltration, lysate clarification, and suspended solids removal. Additionally, mechanical stirring mechanism minimizes concentration polarization and membrane fouling while operating at high permeate flow rates and recovery. 

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Sterlitech has seen a rising trend in the need for highly resistant membrane filtration systems from researchers.  In response to this trend, Hastelloy^TM (C-276)¹ versions of bench-top stirred cells,  cross flow and forward osmosis test cells have been developed and are now available for the Stirred cells,  Developer, Explorer, and Innovator product families.

Hastelloy^TM (C-276) is a steel superalloy containing nickel, chromium, molybdenum, and tungsten. It has outstanding resistance to corrosion, pitting and cracking when exposed to a wide range of aggressive chemicals and corrosive solutions: such as concentrated halide salt solutions, strong acids, and oxidizing acids.

How about highly resistant system components and parts?

To provide ultimate support, Sterlitech now offers high pressure feed flow pumps and pressure gauges with Hastelloy^TM (C-276) wetted parts. We also supply fittings, tubing and valves made of Hastelloy^TM (C-276). Users can now assemble membrane systems

Graphene oxide (GO) has made its way to more than 500 peer-reviewed journal articles in 2017, demonstrating a variety of membrane technology applications.  Out of the 500 papers, about 80 have investigated the use of graphene oxide for filtration applications (Figure 1). Research on graphene oxide has been a rapidly growing field since 2012, when Nair et al. first demonstrated that GO membrane allows unimpeded permeation of water while blocking all other compounds in the vapor phase.¹

Graphene oxide membranes have been extensively investigated for water desalination, oil-water separation, gas separation and pervaporation applications. This material is also being developed into commercial membrane products. G2O is a UK-based company with a patent to utilize graphene oxide membranes to separate oil from water. This technology is applied in the oil industry to create fresh water from seawater. G2O is currently working with a number of industry and innovation partners to scale up and bring

After months of living under the looming threat of “Day Zero”, Cape Town has tentatively pushed back the deadline of extreme water crisis for the remainder of the year. Day Zero, which had originally been scheduled for April 22, reflects the date when water levels in the city's major dams reaches 13.5% of their capacity. If this day arrived, taps would be shut off and Cape Town residents would need to stand in line to pick up their 25-liter daily ration of water.¹ For perspective, this equivalent to the amount of water consumed in a four-minute shower.²

Drought-driven water shortages are a worldwide crisis. The cities at highest risk to run out of water include Jakarta (where the city is sinking from illegal groundwater extraction as sea levels around it rise), Mexico City (where taps are already turned off for many city citizens for parts of the day), Tokyo, London, and Miami.³ In California, almost 50% of the state is currently experiencing moderate drought.⁴

Cape Town is South Africa’s

The Seq-Well protocol uses PCTE membranes in an innovative platform for rapid single-cell transcriptomics. This powerful tool in the world of clinical discovery offers a precise snapshot of cellular behavior.

As the product of a joint research venture between the Shalek and Love groups at MIT, this portable device combines single-cell sequencing with microfluidics technology. The system enables researchers to study RNA transcripts present in numerous individual cells at a given point in time. Thousands of cells undergo parallel RNA sequencing for thousands of genes, yielding large sets of data that indicate patterns in gene expression. For example, data collected by the developers of this technology has been used to implicate basal cellular heterogeneity in individual tuberculosis responses.¹

In the Seq-Well system, a nanowell array captures single cells for sequencing. These wells are protected by a semipermeable membrane, which allows for lysis chemicals to pass through but retains the