SKU: 59910771163

PALL 4929 Acrodisc Syringe Filter with wwPTFE Membrane - 0.2 µm, 25 mm (1000/pkg)

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Description

PALL 4929 Acrodisc Syringe Filter with wwPTFE Membrane - 0.2 µm, 25 mm (1000/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: 59910771163

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Flipflop
Battle Creek, US
★★★★★ 5
A Special Education Treasure
Format: Board book
I bought this book with one student in mind. A third grade autistic, non verbal, girl with a love for books, animals and reflective surfaces (windows, puddles, utensils and mirrors to name a few). The bright, cheerful illustration was the immediate interest upon her first look. The engaging fun story kept her attention. The last page captivated her. What a complete joy to watch! She will now say "Wiggle" when she wants this book - several times a day. She follows along with her finger while I read. I do not read the last page. She does that all ON HER OWN! Did I mention non verbal?! I'm purchasing another as a Christmas surprise for her to have at home. I highly recommend this book as a fixture in the classroom for Special Education and Early Learning.
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Reviewed in the United States on November 12, 2023
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Amazon Customer
Phoenix, US
★★★★★ 5
A staple for your Early Education libraries!
Format: Board book, Format: Board book
This book is adorable! One to use at every circle time in my classroom and my at-home children's library. I love the simplicity of the book and the beautiful art throughout. As a special education teacher and caretaker for more typical peers, you need to go in fast and animated to keep the attention of young learners...This book does all of those things and more. The ending with the mirror will teach early prediction skills and allow your child to see themselves as the wiggliest of all! (I chose this book for ages pre-birth through six years old).
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Reviewed in the United States on October 4, 2023
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Verified Purchase
Gloria A Santa Anna
Omaha, US
★★★★★ 5
Spoiler Alert! You are Wiggly
Format: Board book
Soooooooo funny! My grandson never stops,, go go go…. So to see at the end the picture is YOU! lol. And the bonus, you go through the animal kingdom associating the animal with how they move…. Instead of sound. Stimulates a different awareness.
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Reviewed in the United States on January 31, 2026
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Genevieve
Lowell, US
★★★★★ 5
Very cute story. Absolutely loved
Format: Board book
This is a great book. Looking forward to many additional ones by the author.
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Reviewed in the United States on December 8, 2024
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Cheryl Dyer
New York, US
★★★★★ 5
Playful and FUN -- makes a great holiday gift
Format: Board book
"Are You Wiggly?" is not just a story; it's an adventure that brings laughter, curiosity, and joy to every page. Children learn about various animal movements plus enjoy a fun little surprise at the end. The playful illustrations add to the fun as well! I got several and will be giving as gifts this holiday season.
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Reviewed in the United States on October 12, 2023

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