Page 6 - Filtration Resources
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June 17, 2022What is a hydrophilic PCTE membrane? Polycarbonate track-etched (PCTE) membranes are characterized by durability, low protein binding, controlled porosity, and surface smoothness. PCTE membranes come in hydrophilic and hydrophobic materials, which affects the membrane “wet-ability”. Wet-ability refers to the ability of a membrane to draw water into the pore structure. Hydrophilic PCTE membranes have a high “wet-ability”, which means that the water contact angle is less than 90 degrees. As a water droplet is drawn through the membrane by capillary action, the water contact angle decreases. Hydrophilic membranes are best used for applications with aqueous solutions such as cell culturing, biological assays, and sterilization.
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April 25, 2022
In honor of National Beer Day learn about the science of beer and how Sterlitech’s filtration products help.
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April 25, 2022Earth Day is a chance to show appreciation for our planet’s natural resources. This Earth Day we are highlighting clean water resources and wastewater treatment methods.
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March 11, 2022You’ve just finished testing a coupon with your new Membrane Test Cell, and are ready to evaluate the performance of a different coupon to compare results. You attempt to disassemble the housing but the fasteners won’t budge. You might be thinking “oh my gall, what just happened? Well, exactly that, it’s a phenomenon known as “galling”.
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February 04, 2022The aluminum oxide (AO) membrane filters are extremely brittle and will fracture if subjected to bending. Great care must be used when handling and placing the filters. They cannot be handled using fingers. They must be handled with smooth membrane tweezers or with vacuum tweezers, such as SPI 00016-AB or similar. When choosing vacuum tweezers, make sure to select one that apply continuous vacuum with an electrically powered motor. Continuous vacuum is required since the AO membrane is permeable and will have some small airflow. Don't bother trying the cheap vacuum tweezers that use squeeze bulbs to create vacuum; they won't work.
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December 13, 2021
Sterlitech presents a new addition to its membrane line: Polyethylene. A comparable alternative to the discontinued polypropylene membranes, these polyethylene membranes provide several advantages over Polyethylene membranes, including but not limited to
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November 12, 2021
Equipment down time is never part of an experimental plan, but the reality is assembly instructions aren’t always clear, equipment needs to be maintained, and components need to be replaced with wear. Or maybe, you’ve inherited a product and just aren’t sure whether you have all of the components or it’s in a ready state for use. Whether you’re a new user navigating initial start up, or a long time user in the middle of an experiment in need of immediate assistance, following paper manuals, written instructions, or waiting for a response can be trying.
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November 12, 2021Tangential Flow Filtration (TFF), or Crossflow Filtration, is a physical separation technique that uses the size difference between the liquid particles and the membrane pores to separate them. A substantial distinction is established between ceramic (inorganic) and polymeric (organic) materials in the manufacture of TFF membranes. To address the restrictions of polymeric membranes, ceramic membranes were created in the 1980s, allowing TFF to be used in additional applications. Initially developed for its use in extreme conditions, ceramics have become mainstay membranes in a number of industries, including environmental, food and beverage, biopharma, chemical, gas, and electronics. However, costs associated with evaluating at scale may deter new users.
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October 13, 2021Do you require assistance with your Rocker products? Perhaps you’re unsure how to troubleshoot your Rocker pump vacuum, or maybe you want to learn how to replace your Rocker moisture trap filter. You can find all the answers to these queries in the Rocker Repair Guide Channel.
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October 13, 2021Let’s say you’re an application engineer in the textile industry, and you’re tasked with finding the right technology to separate dye from wastewater. There are specific questions you need to ask to guide you into making the best choice possible.
