SKU: 94294636160

PALL 4932 Acrodisc Syringe Filter with wwPTFE Membrane - 0.45 µm, 25 mm (1000/pkg)

Sale price$857.90 Regular price$953.22
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Description

PALL 4932 Acrodisc Syringe Filter with wwPTFE Membrane - 0.45 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: 94294636160

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JT Rose
Boise, US
★★★★★ 5
Working really well so far! Equal if not better than Sensodyne
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
Love this toothpaste!! Ive been using Sensodyne for a while because I have had lots of cavities and such sensitivity. Ive gotta say this is equal to if not befter then Sensodyne! Its DEFINITELY helped my teeth sensitivity and it whitened them!! I will continue this and hope it keeps working and prevents future cavities. This flavor is also awesome.
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Reviewed in the United States on April 10, 2026
K
Verified Purchase
Kimberly D.K. Schmitt
Lake Worth, US
★★★★★ 5
Love it BUT it MAY cause dry mouth?
Size: Pack of 1, 4 Ounce, Set name: B. Probiotic - Peppermint
I love the mild minty flavor and the fact it is probiotic. I have been using Boka flouride free Nana-Hydroxyapatite since June 2025. At that time, my front teeth had begun to appear somewhat translucent. When I asked my dentist about it I was told it was due to my age (52) and losing minerals & enamel in/on my teeth. After some research, I discovered nano-hydroxyapatite and figured, ‘why not’? My teeth have always been sensitive and my gums prone to bleeding. I have always used Sensodyne and was unsure of changing but I have found my teeth ate less sensitive now. I just had my 6 month check up & my gums hardly bled & my front teeth are far more ‘solid’ looking! The hygienist complimented me on my improvement since the last check up. All I’ve done differently is the toothpaste! I am not certain if the toothpaste is the reason (due to lack of fluoride) for my new symptom of dry mouth but I haven’t begun any new Rx’s. I am thinking it is the toothpaste because the products I found to aid with dry mouth all contain fluoride. Just a heads up.
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Reviewed in the United States on March 5, 2026
K
Verified Purchase
Kris Todd
San Leandro, US
★★★★★ 4
Clean, unharmful ingredients.
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
Good stuff. I had somekind of an allergic reaction to a chemical in it, as I do most toothpaste though. Whatever it is, strips the lining of the inside of my mouth. It wasn't as bad as some of the other's that I have used though. I need to find out what it is in the toothpastes that I use that does this, so I can stay away from it. Otherwise, I liked the taste and how good it cleaned my teeth.
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Reviewed in the United States on March 17, 2026
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Verified Purchase
Vlad
Los Angeles, US
★★★★★ 5
Fresh Taste and Super Clean Feeling
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint, Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
I’ve been using this toothpaste for a while now and just ordered my second tube. The citrus mint flavor is really — fresh but not overpowering. I also love that it’s safe for kids, so the whole family can use it. The fine particles leave my teeth feeling super clean and smooth, almost “squeaky clean” after brushing. It keeps my mouth feeling fresh for a long time and I’ve noticed much less plaque buildup throughout the day. Definitely one of the best fluoride-free toothpastes I’ve tried so far.
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Reviewed in the United States on May 29, 2026
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Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 5
Love, love, love!
Size: Pack of 1, 4 Ounce, Set name: A. Probiotic - Citrus Mint
I love this toothpaste! It has done an amazing job removing plaque. It has helped my sensitivity immediately and I am able to handle cold water or drinks again without any pain. I also love that this is a prebiotic toothpaste.
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Reviewed in the United States on May 30, 2026

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