SKU: 83441901837

PALL 97057 AcroPrep 24-Well Filter Plates 50K Omega Filter Plate 8pk

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Description

PALL 97057 AcroPrep 24-Well Filter Plates 50K Omega Filter Plate 8pkAcroPrep 24 Well Filter Plates with 30K Omega membrane are optimized for ultrafiltration applications, offering the rapid and efficient separation of biomolecules. Ultrafiltration is a membrane separation technique used to separate extremely small particles and dissolved molecules in fluids. The primary basis for separation is molecular size, although other factors such as molecular shape and charge can also play a role. Molecules larger than the

AcroPrep 24-Well Filter Plates with 30K Omega membrane are optimized for ultrafiltration applications, offering the rapid and efficient separation of biomolecules.
Ultrafiltration is a membrane separation technique used to separate extremely small particles and dissolved molecules in fluids. The primary basis for separation is molecular size, although other factors such as molecular shape and charge can also play a role. Molecules larger than the membrane pores will be retained at the surface of the membrane and concentrated during the ultrafiltration process. Ultrafiltration can be used in a variety of applications including size exclusion, PCR clean-up, nucleic acid purification and protein separation.
The Pall Omega membrane is a polyethersulfone membrane specifically modified to minimize protein and nucleic acid binding. The low binding nature of the membrane offers numerous benefits, including high recoveries of low concentrations of biomolecules and less surface fouling, which can cause retention performance to decay. The Omega ultrafiltration membrane is available in Pall’s range of centrifugal devices as well as AcroPrep 24, 96 and 384-well filter plates.
AcropPrep 24-well filter plates allow up to 7 mL of sample to be filtered in each well, eliminating the need to process samples with other labor intense methods and resulting in time savings. Researchers can confidently incorporate Pall 24-well filter plates into their workflow without costly and time-consuming membrane evaluations.
AcroPrep filter plates are constructed from chemically resistant and biologically inert polypropylene which means that the plates themselves are low in binding to nucleic acids and proteins. A patented design and unique sealing mechanism is used to individually seal filter media into each well of the plate, preventing crosstalk and the possibility of cross contamination from one well to another. The filter plates feature a smooth well design that provides consistency in filtration times, as well as efficient sample. All plates come with a receiver plate and a lid.

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SKU: 83441901837

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John J. Shea
Grantham, US
★★★★★ 5
A thoroughly-researched, thoughtful, and nuanced work about the 1692 Salem withcraft panic.
Format: Paperback
This graphic novel recounts the 1692 Salem (Massachusetts) witchcraft panic that engulfed Salem, Salem Village (now Danvers), and adjacent communities. About two dozen men and women were convicted and hanged, one was pressed to death (tortured) to try to force him to acknowledge the Court’s authority. That man was Giles Corey, aged 80. The book focuses on him, but it covers others among the accused and executed as well as on the judges, politicians, and other involved. (No so much on the accusers and their motives.). The narrative plays out chronologically with interstitial vignettes in which 19th Century literary figures Nathaniel Hawthorne and Henry Wadsworth Longfellow wander around Salem during the 1800s discussing the trials and their legacy. (Hawthorne lived in Salem for a time and was a descendant or the Court of Oyer and Terminer Judge Hathorne.). The work concludes with a chapter, More Wonders of the Invisible World, that follows how Salem developed economically up to the present day in which witchcraft-related Halloween tourism turns Salem town into arguably the least attractive “tourist attraction” on Cape Ann. (Do not skip this chapter, it is engrossing.) An extensive series of endnotes provide scholarly references and background information. The artwork veers back and forth between caricatures (the 17th century events) and realism (19th century and onwards). In both cases the line art is exquisite. The text includes quotes from transcripts of the trials and other contemporary documents as well as fictional dialog. Wickey worked on this book for more than a decade, and it shows in his thorough scholarship. This is, in all seriousness, Pulitzer/Eisner-level work. Wickey was born in Beverly and resides on Cape Ann. Most of us born and raised on the “North Shore” learn about the Salem witchcraft panic in high school -often as a cautionary tale about politics, spectral evidence, and what we would today call “lawfare.” I thought I knew a fair amount about the 1692 panic, but I learned something new with nearly every other page. I was especially glad to see Wickey cover now-debunked ergot-poisoning theory and that he dismissed the vile slander that some among the convicted and executed were actually witches. There’s nothing really “missing” from the book, though one wishes one could learn more about the fates of the accusers other than Ann Putnam. That their motives appear to have been “sport” is bone-chilling fully three centuries later. Read her "apology" years later and try not to think, "psychopath." At 500 plus pages, it's too long to read at one setting, but it is a pleasure to read at shorter intervals.
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Reviewed in the United States on December 26, 2025
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Salvatore P. Vasta
Omaha, US
★★★★★ 5
Masterpiece
Format: Kindle
It has been said that any work of literature should be gauged upon how much the work makes the reader think. Ben Wickey has certainly achieved this - in spades - as one of the “civilised” world’s most frightening episodes is revisited with respect and thoughtfulness on the human condition.
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Reviewed in the United States on January 12, 2026
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Jessica Richart
Lake Worth, US
★★★★★ 5
Books
Format: Paperback
I bought this book for my husband as a Christmas present and he enjoyed the book!
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Reviewed in the United States on February 17, 2026
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Molly H
San Leandro, US
★★★★★ 4
The Tale of Salem
Format: Paperback
If you’re not familiar with the history of Salem and its witch trials, this graphic novel is a solid entry point. The author, while not a historian, clearly put in the work—spending time in Salem, connecting with residents, and striving to honor both the historical record and the modern-day sentiments of those who live with that legacy. His goal was to get the facts right while also capturing how the people of Salem view their own history, and I think he succeeded in that respect. The artwork fits the subject matter well. We often imagine people of that time as living hard, joyless lives, and the art conveys that sense of austerity. The mix of black-and-white and color panels is sometimes striking—there are moments where the color really enhances the impact of a scene—but other times I wasn’t sure what it added. Still, the black-and-white aesthetic ties neatly into the grim tone of the era. That said, the book is quite long, and if you’re already well-versed in the Salem Witch Trials, you may not learn much new in terms of facts. But if you enjoy studying the trials or want to explore the story through a different medium, this graphic novel is definitely worth picking up. For me, it landed at a 3.5 stars, which I’ll round up to 4 (since I usually do that when posting on review sites).
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Reviewed in the United States on November 6, 2025
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P. M. Cooper
Carnegie, US
★★★★★ 5
Salem's a Lot
Format: Paperback
Great comic that deserves to be at the top end of best of 2025 lists. Intensively researched with multiple art approaches to the varied settings. It also made me want to take a trip to Salem in the off-season. A virtuosic undertaking!
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Reviewed in the United States on January 6, 2026

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