Close
HOME Electrophoresis Blotting Detection Reagents

Tween® 20pure, Ph. Eur., USP

(Polysorbate 20, Polyoxyethylene sorbitan monolaureate)
Mr ca. 1200 • CAS [9005-64-5]

Tween® 20, belonging to the family of polysorbates, is a non-ionic surfactant, which effectively prevents non-specific reactions between antibodies, antigens and other molecules (1, 2). The detergent is used in sample preparation and signal transduction research for solubilisation of membrane components (3) and in density centrifugation of viruses (4). Tween® 20 serves as an emulsifier for the preparation of stable oil-in-water emulsions.

Used as a component of:
  • Wash buffer and blocking buffer in Western blot analyses
  • Blocking buffer for immunohistochemistry
  • Wash buffer for ELISA (Enzyme-linked Immunosorbent Assay)


    Free dioxane
    Free ethylene oxide
    n
    Non animal origin

    		 max. 1 ppm
    max. 1 ppm
    ca. 20, CMC (25 °C) 0.059 mM, HLB 16.7
    Tween® = registered trademark of CRODA International PLC


    References:
    1. Thean, E.T. & Toh, B.H. (1989) Anal. Biochem. 177, 256-8
    2. Tovey, E.R. et al. (1989) Electrophoresis 10, 243-9
    3. Lund, S. et al. (1989) J. Biol. Chem. 264, 4907-15
    4. Boeye, A. & DeRees, A. (1989) Arch. Virol. 107, 77-84

    EINECS: 500-018-3 • WGK: 1L • HS: 34024200
    Storage Temperature: +15 °C to +30 °C

    • Cat.No.
    Size
    EUR
    37470.01
    500 g
    inquire*
    Please Login to order.
    37470.02
    5 kg
    inquire*
     
    *Please use the inquiry form in the right column.

    Certificates of Analysis (Lot.-no. - release date)

    Lot No.: P141010 — September 18, 2014
    Lot No.: 240603 — July 15, 2024
    Lot No.: 240322 — April 9, 2024
    Lot No.: 240175 — February 22, 2024
    Lot No.: 240065 — February 5, 2024
    Lot No.: 230866 — August 16, 2023
    Lot No.: 230331 — March 23, 2023
    Lot No.: 230197 — February 27, 2023
    Lot No.: 230061 — January 24, 2023
    Lot No.: 221120 — November 29, 2022
    Lot No.: 220194 — February 23, 2022
    Lot No.: 210815 — July 7, 2021
    Lot No.: 210569 — May 6, 2021
    Lot No.: 210145 — February 9, 2021
    Lot No.: 210082 — January 28, 2021
    Lot No.: 201129 — October 26, 2020
    Lot No.: 200848 — August 24, 2020
    Lot No.: 200610 — June 19, 2020
    Lot No.: 200531 — May 25, 2020
    Lot No.: 200109 — February 4, 2020
    Lot No.: 191021 — October 25, 2019
    Lot No.: 190960 — October 7, 2019
    Lot No.: 190882 — September 10, 2019
    Lot No.: 190727 — July 15, 2019
    Lot No.: 190340 — April 4, 2019
    Lot No.: 180943 — September 13, 2018
    Lot No.: 180680 — June 25, 2018
    Lot No.: 180613 — June 5, 2018
    Lot No.: 180286 — March 8, 2018
    Lot No.: 171194 — January 9, 2018
    Lot No.: 171050 — November 24, 2017
    Lot No.: 170398 — May 3, 2017
    Lot No.: 170136 — February 9, 2017
    Lot No.: 160809 — December 12, 2016
    Lot No.: 160487 — May 13, 2016
    Lot No.: 160226 — March 7, 2016
    Lot No.: 150887 — July 23, 2015
    Lot No.: 150813 — July 7, 2015
    Lot No.: 150132 — February 4, 2015
    Lot No.: 141010 — September 18, 2014
    Lot No.: 140882 — August 12, 2014
    Lot No.: 140293 — March 12, 2014
    Lot No.: 140041 — January 13, 2014
    Lot No.: 130727 — June 21, 2013
    Lot No.: 130305 — March 20, 2013
    Lot No.: 120964 — August 13, 2012
    Lot No.: 120617 — June 14, 2012
    Lot No.: 120217 — March 2, 2012
    Lot No.: 111852 — December 21, 2011

    Additional Information

    You may find this also interesting:

    Product Inquiry
    *
    *
    *
    *Please add your address and phone number to the field "Message". Samples according to availability. Equipment demonstration on request in Germany and other countries by appointment.
    Your data will be processed electronically to answer your inquiry. By sending your request to serva.de you agree with the Privacy Policy.

    News

    SERVA Catalog
    2023
    more
    Electrophoresis by SERVA - Catalog
    more
    Watch the SERVA Video!
    more
    Certificates of Analysis
    now online!
    more
    SERVA - now on YouTube

    Top
    Close window
    SERVA Catalog
    2023

    In detail you will find the following new products in catalog 2022:

    • New glycosidases such as Endo F3, Endo S and Sialidase
    • Blotting kits to match the "Easy Peel" 2D HPE™ gels for blotting horizontal 2D gels
    • New protein standards, e.g. SERVA Triple Color Protein Standard I    and the SERVA Fluo-610 Protein Standard I, pre-stained for direct fluorescence detection
    • BlueVertical™ PRiME™ blot module and gel casting stand for SERVA's BV-104   electrophoresis  tank
    • he albumin portfolio has been expanded with the "Albumin bovine Fraction V, protease- free, low IgG"
    • Ready-to-use CL HRP Western Blotting Substrates SERVALight "PreMix"
    SERVA Catalog 2023.pdf
    Close window
    Electrophoresis by SERVA - Catalog

    • Isoelectric Focusing

    • SDS PAGE

    • 2D Electrophoresis

    • Native Electrophoresis

    • Western Blotting

    • Nucleic Acid Electrophoresis

    • Equipment

    SERVA Electrophoresis Catalog (PDF)
    Close window
    Watch the SERVA Video!

    We are SERVA! Watch to see where we are located and how we are serving scientists worldwide.

    → SERVA Video

    Close window
    Certificates of Analysis
    now online!

    How to find the required certificate of analysis for your product:
    In the search, enter the 5-digit article number without additional packaging, i.e. 11404 if you are looking for the AZ for your 500 g-Pack Agarose 11404.02.
    Now click on the search result and you will be taken to the product entry. Here you will find the link "Certificate of Analysis", which you follow.
    Now select the lot number from the list and download the PDF with a click. Done.

    Close window
    SERVA - now on YouTube
    SERVA YouTube Channel

    SERVA InfoMail - Get the latest information

     Close window

    When subscribing to »SERVA InfoMail« you will receive information about the latest product release, special promotions, new jobs at SERVA and more. This service is, of course, free of charge.
    You may remove your name any time from the list of recipients.

    Quick Order

     Close window

    Using the Quick Order field, you can add a product to your shopping cart with just one click. All you have to do: enter the Cat.No. as shown in our catalog in the format xxxxx.yy and click the Go!-Button.