Page 9 - Filtration Resources
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April 13, 2020Earth Day, celebrated globally on April 22, developed to support environmental issues and promote world peace. The theme for Earth Day 2020 is climate action.
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April 13, 2020Did you know that you can observe osmosis with ingredients that might already be in your kitchen? With only an egg, vinegar, corn syrup, and food coloring, this fun science experiment can shine some light on the invisible but indispensable process of osmosis, reveal the power of the semipermeable membrane, and create colorful eggs just in time for Easter!
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March 11, 2020Why Perform a Bubble Point Test? In the bubble point test, pore size rating is determined by measuring the lowest air pressure needed to overcome the surface tension between the wetting liquid and the membrane pores in a fully wetted membrane. This pressure level, known as the bubble point, is signaled by the first appearance of a steady stream of bubbles observed from a special disc filter holder through the downstream side of the membrane filter. The measured bubble point is then correlated to the membrane pore size diameter.
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January 10, 2020Membrane Distillation (MD) is a relatively new and promising separation technology that is an alternative to more energy intensive methods such as reverse osmosis or distillation. MD is a thermally driven process where only vapor molecules transfer through a hydrophobic (water repellent), microporous membrane.
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December 09, 2019We like to remind our customers to be careful when feeding chemical solutions into their Membrane Filtration Systems. Ensuring that the chemical solutions are compatible with the wetted parts of these filtration systems or membranes will help you achieve consistent results and lengthen the service life of your systems to support future experiments.
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November 06, 2019A common question users of disk, syringe, and capsule filters ask is: How long will my filter last? Or, put another way: How much fluid can I expect to pass through my filter before it clogs? The answer to this question will help users select appropriately sized filters.
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September 11, 2019Pore size rating is among the key selection criteria for membrane filters as it indicates the extent of particle size (including microorganisms) that can effectively be retained in a filtration application. With its importance, manufacturers are compelled to provide pore size ratings as accurately as possible.
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July 08, 2019With around 220 million infected in 2017, schistosomiasis (“snail fever”) remains a major public health concern, especially in the endemic regions of Africa which account for about 90% of cases worldwide [1]. Schistosomiasis is caused by tiny, parasitic flatworms carried and released by certain species of freshwater snails. Infection occurs when individuals come into contact with contaminated water. The disease burdens low-income communities in developing regions with poor access to safe sources of water and sanitary facilities.
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June 04, 2019
Did you miss our webinar on microfiltration membranes? The webinar recording is now live, click on the video below. Our filtration experts discussed the characteristics and applications for membrane filters2, and answered any questions during the webinar.
What we went over in the webinar:
- Microfiltration membranes
- Concepts and mechanisms of separation
- Membrane characteristics and selection
- Wettability
- Pore size rating
- Q&A
Are you interested to register for future webinars? Now you can click here.
Contact [email protected] for any questions.
References
- Introduction to Microfiltration Membranes - (2019). Retrieved from https://www.youtube.com/watch?v=i5UwU7fjFUk
- Membrane Disc Filters (2019). Retrieved from https://www.sterlitech.com/membrane-disc-filters.html
- Sterlitech Corporation YouTube Channel - (2019). Retrieved from https://www.youtube.com/channel/UClJKohDCP7LmH7CXrt3yysg
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June 04, 2019
The Hydracell pump is a sealless positive displacement pump used to generate cross flow in our filtration systems equipped with cross flow test cells . The sealless design enables it to handle abrasives and particulates; the positive displacement design enables the pump to generate consistent flow rates regardless of the operating pressures up to 1100 psi (76 bar).
To ensure optimal performance of the pump over extended periods, observe the proper operation and conduct regular maintenance. Here are some of our tips for ensuring a reliable Hydracell pump.
Before Starting Up
Check the pump for the following items:
- All pressure control valves in the system are open
- Pump has adequate supply of fluid in the feed tank
- All connections in the pump inlet and outlet are tight
- Oil level is ¾ inch (20 mm) from the top of the fill port
Recommended Operating Condition
Maximum operating temperature: 160 °F (71 °C) (specified on the pump body)
NOTE: A few of our pump units can be operated up
