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PALL 4927 Acrodisc Syringe Filter with wwPTFE Membrane - 0.2 µm, 25 mm (200/pkg)Syringe filters are used in analytical chemistry applications to remove particulate contamination prior to analysis. Filtering a sample prior to sample injection into analytical instrumentation will help protect sensitive parts of the instrument from particulate build up and reduce system downtime. Sample filtration using syringe filters containing 0. 45 m (HPLC) or 0. 2 m (UHPLC) pore size membranes will also extend the life of chromatography columns
Syringe filters are used in analytical chemistry applications to remove particulate contamination prior to analysis. Filtering a sample prior to sample injection into analytical instrumentation will help protect sensitive parts of the instrument from particulate build-up and reduce system downtime. Sample filtration using syringe filters containing 0.45 μm (HPLC) or 0.2 μm (UHPLC) pore size membranes will also extend the life of chromatography columns by preventing particulate from blocking the flow path between the column packing. Pall’s Acrodisc Syringe Filters with wwPTFE membranes have been designed to protect analytical instrumentation and improve the reliability of results. wwPTFE membrane devices are chemically compatible with a wide variety of common solvents and are suitable for use in both aqueous and organic applications. These syringe filters are constructed with solvent compatible polypropylene material. The polypropylene plastic provides the syringe filter with exceptional strength, it is the highest grade of plastic with minimal additives and passes United States Pharmacopeia (USP) Biological Reactivity Test, In Vivo <88> plastics testing. Both the wwPTFE membrane and polypropylene housing are extremely low in levels of potential extractables that can lead to chromatographic interference. The devices are low in protein and API binding which make them ideal for drug studies, such as dissolution testing. Pall provides HPLC certification with these products, ensuring that analytical results will not be compromised by extractable filter materials. Pall membranes are tested for compatibility with common HPLC solvents including water, methanol, and acetonitrile, using established HPLC procedures. In addition, to verify low levels of UV-detectable extractables, samples of the syringe filters are evaluated prior to release. Standard 25 mm Acrodisc syringe filters are designed for the filtration of sample volumes up to 100 mL. They feature an effective filtration area of 2.8 cm2.Shipping Notes
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4.5 ★★★★★
Based on 1441 reviews
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Product Reviews
★★★★★ 4
A fairly decent super hero romp
Format: Paperback
If Mister Terrific suffers from any one flaw it is that he is incredibly generic. Nothing about this book was particularly offensive and it provided for some fairly good reads but the villains Terrific goes up against are hardly that. Despite this weakness, I found the series to be a fairly good read and while the major ongoing storylines were clearly cut short by the title's untimely demise, the ending satisfactorily led into the current status quo for Mister Terrific on Earth-2. Whether his presence there becomes relevant or not remains to be seen (particularly with the depature of Earth-2 writer James Robinson) but as things stand now, Mind Games still seems to be valuable background reading for Earth-2 and also lays a bit of ground work for the plot in World's Finest, meaning that Mister Terrific is nicely connected to the two current Earth-2 based titles.
The pace of the book is fairly decent, with several short story arcs that see Mister Terrific facing different villains and an ongoing plot throughout that deals with Terrific's secret identity and the issues he is dealing with as the CEO of a Fortune 500 company. The writing is not always sharp but the supporting cast is fairly solid and its a tragedy that we probably won't see some of these characters again. Terrific himself has enjoyable, if somewhat illogical, inner monologue that typically involves him thinking through a problem and while the science is (often) fuzzy, Wallace does a good job of showing how science and tech form the basis of Mister Terrific's powerset.
I would characterize this book as a solid B-list entry. Fans of the character may appreciate it as well as readers looking for something a little different but it is by no means a must-read. I'll be keeping it on my shelf as an important book for World's Finest and Earth-2 (both of which I have pulled since issue #1) however. If you can get your hands on this trade (or its related single issues) for a modest price, it provides a decent couple of hours of reading. It is a pity that nothing stands out particularly well but I appreciated that so much seemed to happen in only eight issues compared to some of the tedious extended plots of other comics.
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Reviewed in the United States on September 7, 2013
★★★★★ 5
Silver Age Batman time trip
Format: Hardcover
Fun book. I was born at the very beginning of the Silver Age and had older brothers, so I was reading by four, and had great reading material available.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
A Baby Boomer dream come true!
Format: Hardcover
I love the Golden Age omnibus Batman series. However, for many of us baby boomers the Silver Age is what we’ve been craving. Those were exciting days back then, looking for the new issue of Batman or Detective Comics on the newsstand. One of the previous reviewers is correct, though, there are some missing issues between the last golden age omnibus and this, the first silver age omnibus, that need to be put into book form at some point. I certainly hope we get them. But more than anything I am really hoping that this will not be the first and last silver age omnibus. By my count, there are almost exactly the issues needed to make three more silver age volumes before we get to the “new look Batman,” which started in mid 1964. And frankly, I hope they continue on with a “new look” omnibus series as well. This first volume, though, was absolutely beautiful! The re-creation of these old panels is breathtaking. When you go back and look at the old dot matrix original issues and compare them to the re-printings contained within this omnibus…well…there simply is no comparison. Batman, the Silver Age Omnibus Volume One is practically as good as it gets. The only thing more I could have wished for would have been the inclusion of the old advertisements that decorated the pages of the original issues. Other than that, this book is perfect. Wow!
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Reviewed in the United States on December 27, 2022
★★★★★ 5
Quality Reproduction of Artwork
Format: Hardcover
The book looks great and includes a massive amount of content; however, this is DC Batman Silver Age stories verses Marvel Silver Age stories. It was hard getting through some of the stories and did not make it through the entire book. I think I would have enjoyed the stories that came before this collection and/or the great Neal Adams Batman content. This era of batman stories was just silly and boring. But just my opinion.
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Reviewed in the United States on November 5, 2024
★★★★★ 5
Terrific buy for old time Batman comics.
Format: Hardcover
These Batman Omnibus collections are great for compiling these still amazing comics in an inexpensive way. Much cheaper than trying to get the original comics.
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Reviewed in the United States on August 8, 2025