FirstChoice™ Blocking Buffer

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SKU: 786-666-XX Category:
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FirstChoice™ Blocking Buffers contain a proprietary protein formulation that offers greater versatility and lack of cross-reactivity.  This makes FirstChoice™ Blocking Buffers ideal as a first choice for optimization of new assays, system or when determining the optimal blocking buffer for elimination of non-specific binding sites in ELISA, blotting, immunohistochemistry and other applications.  FirstChoice™ Blocking Buffers are compatible with antibodies and avidin/biotin based systems and results in high signal to background ratios. 


For users convenience FirstChoice™ Blocking Buffers are supplied in widely used TBS (Tris-buffered saline at pH 7.5) and PBS (phosphate-buffered saline at pH 7.5) buffers as well as in separate formulations containing Tween®-20 for improving blocking efficiencies.



  • Ready-to-use
  • For Western blotting and ELISA
  • Available as TBS or PBS with optional Tween®-20
  • Animal serum free
  • Biotin free



  • Ideal blocking buffer for setting up new assays and systems



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