Western Blocker Solution

for HRP detection systems


Quality Level

shelf life

≥2 yr

storage temp.


General description

Western Blocker Solution is used to block both PVDF and nitrocellulose membranes after proteins have been transferred onto them through dot blotting or Western blotting; blocking is performed to reduce or eliminate nonspecific binding of primary or secondary antibodies.


Western Blocker Solution has been optimized for detection systems using horseradish peroxidase (HRP) conjugates; it is also compatible with alkaline phosphatase based systems.
Western Blocker Solution has been used for blocking of western blot membranes. It has also been used for dilution of antibodies in western blot.

Features and Benefits

  • Does not inhibit weak HRP signals, as many milk-based blockers do.
  • Can be used both as a blocking component and as a probing component.
  • Supplied ready-to-use; no preparative step is required.

Legal Information

Western Blocker is a trademark of Sigma-Aldrich Co. LLC


NONH for all modes of transport

WGK Germany


Certificate of Analysis

Certificate of Origin

Lalit P Chandravanshi et al.
International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience, 34, 60-75 (2014-02-13)
In view of the increasing incidences of arsenic induced health effects and the vulnerability of the developing brain to its toxic effects, studies have been carried out to investigate the mechanism of arsenic induced cholinergic alterations and understand if such...
A N Meleshko et al.
Experimental oncology, 35(1), 8-14 (2013-03-27)
Idiotype, the unique part of immunoglobulin molecule expressed on the surface of B-cells, represents a specific antigen for vaccination against lymphoma. We have developed a rapid method for immunoglobulin variable fragments cloning, assembling and expression of recombinant idiotype protein in...
In vitro differentiation of human bone marrow mesenchymal stem cells into hepatocyte-like cells.
Pournasr B, et al.
Archives of Iranian Medicine, 14, 244-249 (2011)
Ali Jahed et al.
Autonomic neuroscience : basic & clinical, 118(1-2), 32-42 (2005-03-30)
Post-ganglionic sympathetic neurons express the p75 neurotrophin receptor (p75NTR) and brain-derived neurotrophic factor (BDNF), which together have been implicated in controlling the degree of efferent innervation of peripheral organs [Kohn, J., Aloyz, R.S., Toma, J.G., Haak-Frendscho, M., Miller, F.D. 1999....
Ali Fathi et al.
Journal of proteomics, 101, 1-16 (2014-02-18)
Neural differentiation of human embryonic stem cells (hESCs) is a unique opportunity for in vitro analyses of neurogenesis in humans. Extrinsic cues through neural plate formation are well described in the hESCs although intracellular mechanisms underlying neural development are largely...

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