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Thermo Scientific™ Blocker™ BSA Blocking Buffers

Block membranes, plates and other samples with these ready-to-use 10X PBS or TBS solutions of bovine serum albumin for Western blot, ELISA and other detection methods.

$227.85 - $243.60


Applications ELISA, IHC, WB
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Catalog Number Mfr. No. Description Price Quantity    


thermo scientific™
Blocker BSA in TBS (10X) Pack for $227.85


thermo scientific™
Blocker BSA in PBS (10X) Pack for $243.60
Description & Specifications


Applications ELISA, IHC, WB

Thermo Scientific™ Blocker BSA Blocking Buffers are ready-to-use, 10X PBS or TBS solutions of bovine serum albumin protein for blocking steps in Western blotting, ELISA, immunohistochemistry and nucleic acid detection methods.

These blocking buffers are 10% (w/v) solutions of high-quality BSA that are useful for saturating excess protein-binding sites on membranes and microplates in immunoassays. Blocker BSA Buffers are most frequently diluted 10-fold (to 1% BSA) for initial testing, but other buffer concentrations can be beneficial for specific systems. Blocker BSA is usually more effective than nonfat milk blocking buffers for biotin-avidin systems because it contains a single purified protein that is devoid endogenous biotin.


  • Purified protein – 10% solutions of high-quality bovine serum albumin; a single purified protein provides fewer chances of cross-reaction with assay components than serum or milk solutions

  • Convenient – concentrated formulation saves storage space and can be diluted easily to obtain optimal blocking results for specific applications

  • Easy to use – no waiting for powder to dissolve with this ready-to-dilute liquid concentrate

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