SKU: 23817006224

PALL 4914 Acrodisc Syringe Filter with wwPTFE Membrane - 0.45 µm, 25 mm (200/pkg)

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Description

PALL 4914 Acrodisc Syringe Filter with wwPTFE Membrane - 0.45 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.
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SKU: 23817006224

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4.6 ★★★★★
Based on 11 reviews
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smithirowa
Belleville, US
★★★★★ 4
Leaves You Wanting More
I read about this novel right after Christmas, but I decided to order it anyway. It was not supposed to arrive until some time in February, so I was pleasantly surprised when I received it within a few days of my order. With the snow finally falling in the Chicago area, I knew this would be a good time to read this book. The book begins with a summary of the case with somewhat overwrought language. However, as it moves on to the characters, it becomes more successful. It is important to remember that the novel was written in the 1940s, which means that we have a world that is slower paced than the 21st century. Of course we are looking at a wealthier segment of society in rural England, but this pace allows us to study the scenery and the characters more carefully. This is a world with a mansion that can house a number of guests for Christmas with these guests being able to stay over a few days with a pleasant host. The characters are mostly forgettable with the major exception of Mordecai Tremaine as the amateur detective who helps solve the case. He is a character who is unforgettable. The ending is well plotted, and it leaves the taste of a delicious Christmas dinner in the mouth of the reader. The author, Francis Duncan, wrote in the 1930s and 1940s, and this is the first book of his to be republished. I can only hope that other books by this author will be republished as well and republished soon or at least in time for me to read them by next Christmas. Without knowing anything about his other books, it would be nice to think that I could have other seasonal stories waiting for me in the future. The ending still remains in my mind, even several weeks after I have read the book. It would be delicious to meet Mordecai Tremaine again.
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Reviewed in the United States on January 26, 2016
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Izybella
Lexington, US
★★★★★ 5
I read it and LOVE it!!
Format: Paperback
I actually read this book for December 2021 and it was the perfect murder mystery book that takes place during the wintertime! If you like the style of writing from Sherlock Holmes or Agatha Christie then you will love this book! Also, you don't have to worry about reading certain books before this one because the series has its own separate story for each book! I loved the story so much that I immediate order another book from the series!!
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Reviewed in the United States on December 26, 2021
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Carol Mello
New York, US
★★★★★ 3
Not as good as "Murder has a motive"
Format: Kindle
Actually, if one looks at the original copyrights of this book and "Murder has a motive" , it is clear this is the second book, not the first. In addition, the notoriety Mordecai Tremaine gained from the Dalmering case is mentioned in the text of this book. This book moves much more slowly than " Murder has a motive" and the secrets of the suspects are harder to figure out. I did notice the murderer's slip up during the murder discovery scene. The book ends abruptly and another character who is a psychopath apparently is going to get away without punishment of his despicable behavior that has been going on for a very long time. The plot is original in nature which is a plus. Because of the plot slowness (I trudged onward to the end) and the lack of justice for the psychopathic character, I had to remove a star for each.
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Reviewed in the United States on March 23, 2021
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Alice
Waukegan, US
★★★★★ 4
Written in late 1940s, this mystery has a contrived ending, but still is amusing.
Format: Paperback
The protagonist is interesting, and the author set up a potentially good mystery. However, I thought the murder was exceeding contrived and the ending a bit disappointing. Perhaps I was expecting too much.
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Reviewed in the United States on August 31, 2024
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Isabella
Louisville, US
★★★★★ 5
Great for sensitive skin
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I usually have problems with fragrance in almost any face cream or sunscreen, and my skin reacts very easily, so I’m always careful with what I use. I tried the COOLA Organic Face Sunscreen SPF 50 Sunblock Lotion (Fragrance Free) and I’m honestly impressed. It feels very light on the skin, doesn’t irritate my face at all, and finally a sunscreen that doesn’t have that strong smell that usually bothers me. It absorbs well, works great under makeup, and gives good daily protection without feeling greasy. If you have sensitive skin or issues with fragrance like I do, this one is definitely worth trying.
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Reviewed in the United States on March 25, 2026

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