Merck
CN
All Photos(1)

Documents

RPROB

Sigma-Aldrich

Reversible Protein Detection Kit for Membranes and Polyacrylamide Gels

Sign Into View Organizational & Contract Pricing
All Photos(1)
NACRES:
NA.32

usage

sufficient for 20 applications staining (small 8 X 10 cm blots or PAGE gels)

Quality Level

200

technique(s)

protein staining: suitable

storage temp.

2-8°C

Related Categories

Application

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 Components Only

Product No.
Description
  • Solution A 500 mL
  • Solution B 500 mL

Pictograms

Corrosion
GHS05

Signal Word

Warning

Hazard Statements

H290 - H315 - H319

Hazard Classifications

Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

  1. 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.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. 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.

  4. 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. 

  5. 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. 

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Sensitivity and mass accuracy for proteins analyzed directly from polyacrylamide gels: Implications for proteome mapping
Rachel R.
Electrophoresis (1997)

Articles

Electrophoresis Protein Staining Reagents Selection Guide

To meet the great diversity of protein analysis needs, Sigma offers a wide selection of protein visualization (staining) reagents. EZBlue™ and ProteoSilver™, designed specifically for proteomics, also perform impressively in traditional PAGE formats.

Protocols

Introduction to Western Blot Detection of Proteins

Western blotting involves protein separation by gel electrophoresis, protein transfer to a polyvinylidene difluoride (PVDF) or nitrocellulose membrane, and detection by various methods.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service