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  • Production of High Purity Water from Seawater

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    Authors: Ted Prato, Erik Schoepke, Lance Etchison, Tom O’Brien, Brian Hernon, Kirt Perry, GE Water & Process Technologies, and Mike Peterson, Pacific Gas and Electric     Introduction The Diablo Canyon Power Plant at Avila Beach in California utilizes seawater for both cooling water and for makeup water for steam generation. GE Water & Process Technologies, designed, built and operates a complete water treatment system serving the high-purity water needs of this power plant. Over the past eight years, the seawater treatment section has demonstrated excellent long-term performance as a result of strong design, consistent maintenance, and qualified operators.   This paper will mainly discuss operating experience of the seawater desalination section of the water treatment plant. However, there will also be some discussion of the rest of the integrated membrane system for high-purity water production at Diablo Canyon Nuclear Station, operated by Pacific Gas and Electric. Continue Reading

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  • Toray 70AC RO Membranes Replaced with New Product

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    Toray is discontinuing the production the 70AC reverse osmosis (RO) membrane. This membrane is being replaced in Sterlitech's line-up by Toray's new 73AC RO membrane.    The table below lists the specifications of the new membrane for easy comparison.  To browse our complete selection of RO membranes or to place an order with us, click here.



    Manufacturer Polymer Molecular Weight Cut-off (MWCO) Rej-Size 25°C pH Range Typical






    Toray Polyamide 0 MWCO 99.8 2-11





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  • Sterlitech's 2014 Trade Show Schedule

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    Sterlitech is looking forward to meeting all of you at the following conferences and tradeshows in 2015:

    AMTA/AWWA Membrane Technology Conference, March 2-6, Orlando, FL, Booth #112

    Pittcon, March 8-12, New Orleans, LA, Booth #2745

    ASM General Meeting, May 30-June 2, New Orleans, LA, Booth #945








    NAOSMM Conference and Trade Show, July 27-31, Long Beach, CA, Booth #83


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  • Product Application: Isotopic Analysis with Grade F Borosilicate Filters

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    Water, whether seawater or freshwater, is rarely just H2O.  Dissolved nitrites and nitrates in particular play a key role in the survival of aquatic flora like seaweeds.  In 2005, Matthew R. McIlvin and Mark A. Altabet devised a now common method to analyze the isotopic composition of nitrogen and oxygen dissolved in water in the form of nitrates and nitrites.  The method, which can be found here, requires the removal of all organic matter in the samples. The Grade F borosilicate glass fiber filter, with fine porosity, medium flow rate, and a 0.7 micron size particle retention, is the tool of choice for removing organic matter from water samples.

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  • Stop by and See Sterlitech at Pittcon!

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    Sterlitech's Trade Show Tour continues at Pittcon!

    Pittcon 2013 in Philadelphia PA, March 17-21, Booth #153







    Attendees are encouraged to stop by and say hello, or visits can be scheduled by contacting us in advance. Don’t miss out on the opportunity to discuss your filtration needs and get your questions answered from the experts!


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  • Better, Faster, Stronger: Sterlitech's Website Search is Now Powered by Google

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    In order to improve the user experience on our website, we've revamped our search function to use Google's search engine. Our search function will now deliver the most relevant results to you with lightning fast speed. Visit our site and give it spin. You may just find the exact solution for your application.

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  • Happy Holidays From Sterlitech

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    Sterlitech Corporation would like wish all of you Happy Holidays and thank you for helping to make 2012 a fantastic year!

    In celebration of the holiday season, our office will be closed on:

    Monday - Wednesday, December 24, 2012 - December 26, 2012
    Monday - Tuesday, December 31, 2012 - January 1, 2012

    We look forward to working with you in 2013.

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  • Sterlitech Introduces New Microbiology and Life Sciences Section

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    We’ve added a new section to our site which will carry all of our products that are tailored for Microbiology and Life Sciences. From the first microscopes designed in the 17th century to the powerful computer-driven machines of the 21st century, the exponential progress of these two fields has rested on the technology and equipment available to scientists. Sterlitech’s new line of microbiology and life Sciences products will continue the trend of innovation and provide scientists and researchers with the gear they need to keep breaking new ground.

    In the coming days we will be introducing new products into this section as well as moving some of our older offerings there as well. Be sure to continue to visit our site to see the updates.

    This post was posted in Uncategorized, News and Events, Website Features, Company News, Biotechnology, Laboratory Equipment, Microbiology and Life Sciences

  • The Future of Water

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    Click to enlarge

    Here’s a cool infographic on water challenges in the 21st century, courtesy of the Waterblog by Suez Environment and the World Water Forum. Fair warning: There are some alarming projections here about clean water shortages. That sort of thing might make you a little sad on this lovely Monday, so here’s a link to some adorable animal videos that you can clear your mind with afterward.

    Among the many interesting statistics (It takes 11,000 liters of water to make 1 pair of jeans!) is the note that 2% of fresh water is expected to be produced by desalination by 2015. It seems like every other day we’re hearing about a big new desalination facility opening up somewhere in the world, or an advancement that improves the desalination process.

    One such advancement whose popularity is growing is forward osmosis (FO) for desalination. In short, forward osmosis utilizes natural osmotic pressure to aid in water treatment, therefore requiring less energy and hydraulic pressure. Forward osmosis can also be used as pretreatment for a reverse osmosis system to create a continuous flow process with even greater efficiency. For more research on FO, Yale University’s Elimelech Lab is an excellent resource for forward osmosis desalination. You can also take a look at our new collection of forward osmosis cells and pumps for this application.

    Visit Waterblog here



    This post was posted in Uncategorized, water treatment, Forward Osmosis

  • Filters for Marine Science Applications

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    Marine biology and Oceanography organizations have long used a variety of filter media to assist with their research. While the ways in which filtration supplies can be used are as diverse as the life forms that live under the waves, here we highlight a couple of these applications that have previously been mentioned in published papers to give you an idea about some ways filters can be purposed in marine research.

    In a study on mercury content of the ocean area between Antarctica and Tasmania, researchers from the Ifremer Institute used the 0.2 Micron, 47 mm polycarbonate membrane filters to filter samples of seawater and brine prior to determining their mercury content through atomic fluorescence spectroscopy. The PCTE membranes were used in conjunction with Sartorius filtration devices and a Nalgene vacuum pump to attain filtered water in volumes between 100 and 1000 mL. By applying this filtration setup the researchers were able to find patterns in how mercury travels the ocean.

    Another oceanographic use for filtration materials comes from the study of zooplankton that live deep in the Pacific Ocean. 1.2 Micron silver membrane filters were used to pre-filter samples of plankton waste prior to nitrogen content analysis via a high temperature combustion technique.

    Also using silver membrane filters (1.2 Micron, 25 mm) was an experiment by the Woods Hole Oceanographic Institution which used them as part of a study to see if the growth of marine phytoplankton in certain areas leads to organic carbon being exported. Here the membranes were used to collect and prepare particles from deep water samples for further analysis.

    Remember, these are just a few examples of how filters can be used in the marine sciences. If you’ve been doing your own tests with filter media, let us know in the comments!

    This post was posted in Uncategorized, Silver Membrane, Polycarbonate Membrane, Marine Biology, Oceanography

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