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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
For Your Every Summer RSVP, with Code: SUMMER15
Description
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
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 84 reviews
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Product Reviews
★★★★★ 5
Best fan I have ever used.
Color: White, Size: 42 inches Wifi
Easy assembly, simple WiFi and Alexa connection. Extremely quiet operation. Fan speeds and oscillating feature are perfect.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
It has many conveniences
Color: White, Size: 42 inches, Color: White, Size: 42 inches
I like that it detects temperature and determines what fan speed it should be on to control temperature in the room. Its made a notable difference in my warmest room of the house this summer. Its nice and quiet. You can also adjust the blades up or down if you want to redirect the air flow much like in a vehicle. I got the taller fan for the bigger living space i have and it’s comfortable. I feel the air right away. It’s bot like a pedestal fan. This is much more giving to the entire body rather than just the face. It’s also not as intrusive as a pedestal fan. It fits in smaller spaces. It doesn’t block the view like a pedestal fan
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Reviewed in the United States on July 22, 2025
★★★★★ 5
Liked this so much that I purchased a second one for another room
Color: White, Size: 36 inches
I liked this fan so much that I purchased a second one for another room. Works well, has 5 different speeds, several functions and setting. Has a remote control and a space on the fan that holds the remote. I was initially torn between this fan and another brand, but chose this one because it can be easily taken apart for cleaning. Also it is a very good value for the cost. It is not silent, but it is not loud at all. The fan is very sturdy and easy to assemble. The only assembly is a giant plastic nut on the bottom that holds the stand in place. IMO if you choose this fan, you will not be disappointed.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Most comfortable pillows for my back
I have a really bad back along with sciatica so I use these pillows on my recliner chair, one for my back and one under my bottom. They make all the difference in the world. They are soft and squishy yet still offer support. They are a great value for sure. This blue color was about half the price of other colors with was fine with me because I put washable covers on them anyway. I frequently fall asleep on them. My dog loves when they accidentally fall on the floor because he curls up on them and falls asleep. He finds them very comfortable. I can't say enough good about these. They would be great on a bed or couch too or even as a floor cushion. They are high quality, well made pillows.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Pillow
Color: White, Size: 18x18 Inch
Great pillow and fit the cover perfectly! So soft and durable! The perfect item I was looking for. The appearance is great after the cover is added.
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Reviewed in the United States on June 2, 2026
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