SKU: 41755104163

Sartorius 13279----------E Vivaspin™ Filtrate Centrifugal Concentrators, 14mm, 0.5 to 2.5 mL, 300,000 Da, 12/Pk

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Description

Sartorius 13279----------E Vivaspin™ Filtrate Centrifugal Concentrators, 14mm, 0.5 to 2.5 mL, 300,000 Da, 12/PkOffered with multiple MWCOs and two membrane options: Cellulose triacetate (CTA) features high hydrophilicity and very low non specific binding. Cast without a support that could bind filtered solutes, these membranes are ideal where high target molecule recovery from the filtrate is important. Polyethersulfone (PES) membranes exhibit low fouling characteristics, exceptional flux and broad pH compatibility. Have a uniform surface, devoid of

Offered with multiple MWCOs and two membrane options:

Cellulose triacetate (CTA) features high hydrophilicity and very low non-specific binding.
Cast without a support that could bind filtered solutes, these membranes are ideal where high target molecule recovery from the filtrate is important.
Polyethersulfone (PES) membranes exhibit low fouling characteristics, exceptional flux and broad pH compatibility.
Have a uniform surface, devoid of hydrophobic or hydrophillic interactions, offering excellent protein recoveries for most solutions.
Typical applications for Vivaspin™ Filtrate include:
Sample preparation for free drug
Metabolite or hormone analyses
Sample deproteinization
Separation of proteins from low molecular weight substances in biological samples
Sample capacity of 0.5 to 2.5 mL
May be used in fixed angle or swing bucket rotors, accepting standard conical or flat bottom 15 mL centrifuge tubes
Typically filter 90% of the initial sample volume in 30 minutes
Avoid premature membrane blockage by particle loaded samples
Retrieve the ultrafiltrate immediately after centrifugation without any disassembly

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SKU: 41755104163

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Verified Purchase
Elaine li
Alexandria, US
★★★★★ 5
VERY EFFICIENT MATERIAL
Format: Paperback
It's the most efficient material to prepare the test.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2020
T
ThereseHazzard
Carnegie, US
★★★★★ 5
All around helpful---worth the money!
Format: Paperback
This guide has been most helpful for all the folks I help prepare for the iTEP test! It gives insight into what each section of the test is looking for along with examples and great tips about actually TAKING the test. In the Writing and Speaking sections, it also gives sample scores and comments from the Master Grader which is very helpful too.
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Reviewed in the United States on August 9, 2019
T
Thomas J. Shandorf
Omaha, US
★★★★★ 5
Comprehensive, clear and coherent!
Format: Paperback
The iTEP Practice Guide combines a no-nonsense approach to the specific iTEP tests and at the same time offers exercises that task the student with what they need to know. Exercises not only serve the purpose of scoring well, but the overall approach is communicative competence. We use the text in our group and one-to-one classes with very positive--and lasting--results.
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Reviewed in the United States on July 23, 2019
S
Verified Purchase
Sarah Sofía Ortiz Campos
Carnegie, US
★★★★★ 1
No recomiendo
Format: Paperback
Muy malo, no vine completo, además se demoró mucho más de lo que decía al momento de comprarlo. Solo aplazaban la fecha de entrega sin consultar cómo afectaba al cliente. Yo tuve que presentar el examen sin el libro, porque no llegó en la fecha que decía al comprarlo y después se cambió 3 veces la fecha, casi cumpliendo el mes.
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Reviewed in the United States on December 30, 2025
A
Anthony H.
Lexington, US
★★★★★ 5
Simply easy to learn from
Format: Paperback
What an amazing book! Very easy to learn different languages, and it also simple for kids to learn from. My kids have been learning and having fun with showing me what they’ve learn. So glad I brought this I recommend this for anyone
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Reviewed in the United States on March 22, 2026

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