Thermo Scientific™ Blocker™ Casein Blocking Buffers

Block membranes, plates and other samples with these ready-to-use PBS or TBS solutions of purified casein for Western blot, ELISA and other detection methods.

Brand: Thermo Scientific™

Manufacturer Part Number: 37532

UNSPSC: 41105300

Code: PN

Additional Details:
Additional Details: Weight: 1.00000kg Transport: UN number : 2735 Chem class : 1b Pack group : III

Product Code. 10443644

Quantity Price
1 £ 117.0 / 1 L
EU Stock 33
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Description and Specification


Formulation 1% (w/v) casein in Tris-buffered saline, pH 7.4, with Kathon preservative
Applications ELISA, IHC, WB
Sufficient For 30 blots or microplates at 30mL each
Description Blocker Casein in TBS
Quantity 1L

These blocking buffers contains casein protein that is purified from milk by the Hammarsten method. The phosphate- and Tris-buffered saline formulations are used for blocking excess binding sites on membranes and microplates in antibody-based detection methods. Blocker Casein Buffers are 1% (w/v) casein, which corresponds to the optimal concentration for most applications.


  • Purified casein – single-protein blocking buffer provides fewer chances of cross-reaction with assay components than serum or milk solutions

  • Easy to use – 1% casein solutions are ready to use; can be diluted further as needed

  • Flexible – available in PBS and TBS formulations to suit a variety of applications

  • Safe – stable, thimerosal-free formulations


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