Copper, Rhodanine Stain Kit

Histological Stain Kit Copper, Rhodanine

Used for the detection of copper and copper-associated protein (CAP) in tissue sections.

Product Options:

Part # 9113A 250 ml kit $120.00 H


Part 9113A
Solution A: Rhodanine Stock Stain 0.2%, Alcoholic 50 ml
Solution B: Hematoxylin Stain, Mayer Modified 250 ml
Solution C: Sodium Borate 0.5%, Aqueous 500 ml


COMPLIMENTARY POSITIVE CONTROL SLIDES: Enclosed are two complimentary unstained positive control slides for the initial verification of staining techniques and reagents.  Verification must be documented by running one Newcomer Supply complimentary positive control slide along with your current positive control slide for the first run. Retain the second complimentary control slide for further troubleshooting, if needed.

Individual stain solutions and additional control slides may be available for purchase under separate part numbers.

Additionally Needed:

Xylene, ACS Part 1445
Alcohol, Ethyl Denatured, 100% Part 10841
Alcohol, Ethyl Denatured, 95% Part 10842
Coplin Jar, Plastic Part 5184 (for microwave modification)


For storage requirements and expiration date refer to individual bottle labels.



Newcomer Supply Copper, Rhodanine Stain Kit procedure, with included microwave modification, is used for detection of copper and copper-associated protein (CAP) in tissue sections. Abnormal copper accumulations are predominantly found in liver tissue, most notably in Wilson’s disease.



Fixation: Formalin 10%, Phosphate Buffered (Part 1090)
Technique:  Paraffin sections cut at 4 microns
Solutions:  All solutions are manufactured by Newcomer Supply, Inc.

All Newcomer Supply Stain Kits are designed to be used with Coplin jars filled to 40 ml following the staining procedure provided below.  Some solutions in the kit may contain extra volumes.



    1. If necessary, heat dry tissue sections/slides in oven.
    2. Prepare Working Rhodanine Solution; combine and mix well.
        1. Shake Solution A: Rhodanine Stock Stain 0.2%, Alcoholic well before each use.
        2. Solution A: Rhodanine Stock Stain 0.2%, Alcoholic  3 ml
        3. Distilled Water    47 ml



    1. Deparaffinize sections thoroughly in three changes of xylene, 3 minutes each. Hydrate through two changes each of 100% and 95% ethyl alcohols, 10 dips each.  Wash well with distilled water.
        1. See Procedure Notes #1 and #2.
    2. Stain in Working Rhodanine Solution (Step #2) at 60°C for 1-2 hours or at 37oC for 18 hours.

        Microwave Modification:  See Procedure Note #3.

        1. Place slides in a plastic Coplin jar containing Working Rhodanine Solution and microwave for 6 minutes at 70°C.
    1. At the end of incubation (for both oven and microwave), to avoid unwanted slide precipitate, pour off warm Working Rhodanine Solution into a second Coplin jar; reserve and set aside.
    2. Rinse slides well in several changes of distilled water.
    3. Check positive control slide microscopically to determine adequate copper/reddish brown development.
        1. Return slides to reserved Working Rhodanine Solution if additional incubation is required.
    1. Prepare dilute Mayer Hematoxylin Stain directly before use; combine and mix well.
        1. Solution B: Hematoxylin Stain, Mayer Modified    20 ml
        2. Distilled Water                      20 ml
    2. Stain in dilute Mayer Hematoxylin Stain for 10 minutes.
    3. Rinse in distilled water.
    4. Rinse in Solution C: Sodium Borate 0.5%, Aqueous; 2-3 quick dips.
    5. Rinse well in distilled water.
    6. Dehydrate in two changes each of 95% and 100% ethyl alcohol. Clear in three changes of xylene, 10 dips each; coverslip with compatible mounting medium.



Copper Copper/reddish brown
Nuclei Light blue



    1. Drain slides after each step to prevent solution carry over.
    2. Do not allow sections to dry out at any point during procedure.
    3. The suggested microwave procedure has been tested at Newcomer Supply. This procedure is a guideline and techniques should be developed for use in your laboratory.
    4. If using a xylene substitute, closely follow the manufacturer’s recommendations for deparaffinization and clearing steps.



    1. Bancroft, John D., and Marilyn Gamble. Theory and Practice of Histological Techniques. 6th ed. Oxford: Churchill Livingstone Elsevier, 2008. 251.
    2. Carson, Freida L., and Christa Hladik Cappellano. Histotechnology: A Self-instructional Text. 4th ed. Chicago: ASCP Press, 2015. 258-260.
    3. Sheehan, Dezna C., and Barbara B. Hrapchak. Theory and Practice of Histotechnology. 2nd ed. St. Louis: Mosby, 1980. 230.
    4. Modifications developed by Newcomer Supply Laboratory.