Vector Laboratories is closed for the President’s Day on Monday, February 19th. We will be back in the office on Tuesday, February 20th.
We will respond to emails upon our return. Have a wonderful day.

Carbo-Free™ Blocking Solution (10x Concentrate) (SP-5040-125)



The Carbo-Free Blocking Solution is a protein-based agent used as a general blocking or diluent solution. It is ideal for applications using lectins in which glycoprotein contamination could generate background staining or false positive results. 


  • Essentially free of glycoproteins, unlike other common protein-containing blocking agents like serum, nonfat dry milk, or casein
  • Supplied as 125 ml of 10x concentrate


More Information
Unit Size125 ml
ApplicationsImmunohistochemistry / Immunocytochemistry, Immunofluorescence, Blotting Applications, Elispot, ELISAs, Glycobiology
Recommended Storage2-8 °C
Recommended UsagePrior to use, 10x Carbo-Free Blocking Solution should be diluted to 1x with distilled or deionized water. For prolonged storage of the 1x solution, sodium azide should be added to give a final concentration of 0.08% (w/v) and the diluted solution refrigerated. Carbo-Free Blocking Solution does not contain detergent. In some applications, blocking may be enhanced by addition of Tween™ 20 to a final concentration of 0.05% to 0.1%, in the working solution.
Blocking ActionNon-Specific Protein Blocking


Technical Information

A suggested protocol for detection of glycoconjugates using lectins/agglutinins is available under the “PROTOCOLS” tab.

Applicable patents and legal notices are available at legal notices.

How do I Request a Quote?

To request a quote for products:

  1.  Log in to
  2.  Add the items you wish to quote to the cart;
  3.  View your cart;
  4.  Click on the “Request a Quote” button found below the items in your cart;
  5.  Download your quote