Monthly Archives: May 2018

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. 

Our technical sales representatives are happy

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