Monthly Archives: June 2018

Our new Convertible Skid system is specifically designed as a high-pressure system for pressure driven membrane filtration (such as Reverse Osmosis) that can be conveniently converted to perform as either an osmotically driven (such as Forward Osmosis) or a temperature driven process (such as Membrane Distillation) without the need for any additional parts or equipment. This unique capability creates versatility for both industry and academia where research priorities evolve over time.

Features and benefits of the Convertible skid:

• Designed to operate at high and low pressures
• Convertible

A recent study from the World Health Organization (WHO) found that 9 of 10 people live in environments that expose them daily to elevated levels of air pollution.¹ This contributes to staggering 7 million deaths a year from related diseases.1The danger is largely posed by fine particles less than 10 (PM₁₀) and 2.5 (PM_2.5) micrometers which may pass through the nose and extend beyond the heart and lungs to the brain and cause health problems; these can also affect the environment.¹ US Environmental Protection Agency (EPA) Method 201A is commonly used to monitor PM₁₀, and PM_2.5 for air quality control. Air is withdrawn through two sizing cyclones, and then collected on an EPA approved PTFE membrane filter. After a sample is obtained, gravimetric analysis is used to determine the particulate mass for each size fraction. The PM_2.5 mass is determined by adding the mass of particulates captured on the PTFE filter

Sterlitech offers a broad variety of polyamide active layer thin film composite (TFC) reverse osmosis (RO) and nanofiltration (NF) flat sheet membranes.  It is quite common for these membranes to have visually apparent surface imperfections, most notably small dark spots, resulting from the manufacturing process.  Some inexperienced users may be concerned that these spots are mold or some other contamination, however, these are almost always the result of trace residual amounts of polyamide monomer that have reacted to ambient light.  While not visually appealing, you can rest assured that these spots are not a source of contamination and do not affect membrane performance.  Users should resist the urge to clean these spots as rubbing the membrane surface will cause damage.

Other types of common surface imperfections are light areas or spots that become visually apparent when observing membranes

In September 2017, SUEZ Water Technologies and Solutions acquired GE Water Division. As a result, starting this July, we will follow the branding transition putting in place by the manufacturer and will update GE membranes branding and packaging to SUEZ branding. This transition will not affect the product quality or the specifications, it will be only a branding transition. We will clearly mark the changes on our website and the product packaging to make sure there won’t be any confusion on our customer side. If you have any questions, please let us know.