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RPROB Sigma-Aldrich

Reversible Protein Detection Kit for Membranes and Polyacrylamide Gels

  •  NACRES NA.32



Related Categories Buffers, Reagents, & Stains, Molecular Biology, Other Stains for Electrophoresis, Protein Electrophoresis, Protein Stains Compatible with Western Blotting,
Quality Level   200
usage   sufficient for 20 applications staining (small 8 X 10 cm blots or PAGE gels)
application(s)   protein staining: suitable
storage temp.   2-8°C



R-PROB is a unique protein detection system designed for staining of proteins on nylon, nitrocellulose, and PVDF membranes or PAGE gels with the detection sensitivity similar to that of Coomassie stains. Most other stains produce high backgrounds on nylon membranes due to strong charge interactions with the membrane. The mixing of equal amounts of Solution A and B activates the stain, which produces lavender stained protein bands. The staining is easily reversible with an EDTA solution so that the blot can be reused for Western blotting or for amino acid sequence analysis (PVDF). R-PROB does not contain the toxic chemicals cacodylic acid or potassium ferrocyanide.

Other Notes

Compatible with nylon, nitrocellulose, and PVDF membranes as well as polyacrylamide gels.

Kit component only


Product #

Add to Cart

Solution A 500 mL    
Solution B 500 mL    
Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport


Certificate of Analysis (COA)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
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The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
When using Product RPROB, Reversible Protein Detection Kit,to stain protein on PAGE gels, can the protein be transferred from the gel to a membrane after destaining?
Proteins cannot be transferred to a membrane after being stained and de-stained with the Product RPROB, Reversible Protein Detection Kit.
My question is not addressed here, how can I contact Technical Service for assistance?
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