Vendors List

The following vendors are currently submitting samples of stains for Certification.

Company Address
Abbey Color and Chemical 400 East Tioga St, Philadelphia, PA 19134, USA
Anatech Ltd 1020 Harts Lake Rd, Battle Creek, MI 49037, USA
Astral Diagnostics 1224 Forest Parkway, West Deptford, NJ 08066, USA
Avantor Performance Materials Inc.  PO Box 800, Paris, KY 40362-0800, USA
Constitution Medical, Inc. 186 Lincoln Street, Boston, MA 02111, USA
Dudley Chemical Corporation 125 Kenyon Drive, Lakewood, NJ 08701, USA
Electron Microscopy Sciences 1560 Industry Road, Hatfield PA, 19440, USA
Fisher Scientific, Chemical Division 1 Reagent Lane, Fair Lawn, NJ 07410, USA
Millipore Sigma Company (formerly Aldrich), Quality Control Dept. 6000 N. Teutonia Ave, Milwaukee, WI 53233, USA
Millipore Sigma Company (formerly Sigma) 3500 DeKalb St, St Louis, MO 63118, USA
Polysciences Inc. 400 Valley Rd, Warrington, PA 18976, USA


The following companies currently supply Certified stains as a subsidiary from another company.

  • Cole-Palmer as a subsidiary from Fisher.

Please help us: The commercial sale of a biological stain as “Certified” is permitted by the Biological Stain Commission only for products of the companies listed above. Please let us know about any other vendors claiming to sell “Certified stains”.  Inquiries are also welcomed.

The following companies are NOT recommended by the BSC as souces of Certified stains.
Materials purchased from companies listed below are not validly certified by the Biological Stain Commission.
Despite listings by these companies of “Certified stains”,  their products are NOT Certified by the BSC..

  • Chem-Impex International
  • Chemsavers
  • Ted Pella