Monthly Archives: November 2016

Precision membrane filters in pore sizes larger than 5.0 microns are hard to come by, but not at Sterlitech.

One of our more popular membrane materials is Polyethersulfone (PES). The membranes are ideal for use with difficult biological solutions that tend to clog most other polymer filters, and the 0.2 micron pore size PES filter is the industry standard for sterile filtering of liquids. Sterlitech PES binds very little protein and has a very asymmetric pore structure lending to improved performance. The largest pore size available previously was only 5.0 micron, but this material frequently suffered from long lead times due to increased demand. Sterlitech has implemented steps to ensure current product availability, not only for the 5.0 micron PES filters, but now 8.0 micron as well!

PES is very hydrophilic and shows outstanding performance in a wide range of applications.

A large part of extracting commercially important compounds from plants involves passing a type of solvent over plant material, then filtering out any plant debris and undesirable by-products. This latter filtering process can be difficult to optimize if too many undesirable compounds inadvertently come along for the ride; so how can you speed things up?

In several states, cannabis sativa (AKA: marijuana) is being processed in this way to extract the active compounds THC and CBDs for medicinal use; four of these states have already passed legislation permitting recreational use, and more states are expected to do the same in the next few years. The process to extract THC and CBDs from cannabis is usually done by passing liquefied butane, supercritical CO₂, or cold ethanol over the plant material. These processes are very efficient at extracting the compounds, but also need a secondary filtering process (often called “winterizing’ in butane extraction methods) to rem

Sterlitech is pleased to offer an Acrylic version of the Sepa Test Cell. The Sepa Test Cell is a bench-scale filtration unit designed to offer researchers fast and accurate data to easily evaluate the performance of membranes and/or the membrane separation processes.

Acrylic Sepa Cell Features and Benefits:

• Enables to visually investigate the hydrodynamic conditions in the cell or the local fouling of the membrane
• No need for Cell Body Holder or

We are thrilled to offer our congratulations to David J. Thouless at the University of Washington (just a few miles up the road from Sterlitech!), F. Duncan M. Haldane at Princeton University, and J. Michael Kosterlitz at Brown University. They collectively revealed the secrets of exotic states of matter!

This year’s Laureates opened the door on an unknown world where matter can assume strange states. The scientists have utilized advanced mathematical methods to study unusual phases, or states, of matter, such as superconductors, superfluids or thin magnetic films. Thanks to their pioneering work, the hunt is now on for new and exotic phases of matter. Entrepeneurs and scientists alike are hopeful of future applications in both materials science and electronics.

The three Laureates’ use of topological concepts in physics was decisive for their discoveries. Topology is a branch of mathematics that describes properties that only change step-wise. Using topology