SE-MARK (calcein solution) is a marking agent for the mass marking of fish. This product is manufactured at Western Chemical's Ferndale Washington factory where we operate under strict Good Manufacturing Practices (GMP) as well as Good Laboratory Practices (GLP).

SE-MARK (calcein solution) is being developed to mark fin rays, scales, otoliths, and other calcified fish tissues through the use of immersion baths.  Marks left on these tissues remain invisible to the naked eye and can only be viewed with the use a special detector. Some photographs of SE-MARK (calcein solution) marks can be seen above under "more images". Information on the detector can also be found above.

SE-MARK (calcein solution) is promising in that it can be used to easily and economically mark large numbers of fish. The marks can be detected via non-lethal observations using the Se-Mark (calcein solution) detector.

SE-MARK (calcein solution) is available exclusively through Western Chemical.

If the intended use is to treat food fish, or fish for release, then it must be used according to the FDA's guidelines for Investigational New Animal Drug Application (INAD) # 10-987.  More information including INAD application forms, study protocols, study summaries, etc can be obtained from the U.S. Fish & Wildlife Service's office of Aquatic Animal Drug Approval Partnership Program (AADAP).  The AADAP office has streamlined the INAD process and the staff there are very helpful. If you are interested in using SE-MARK (calcein solution) to mass mark fish, please contact the AADAP office which can be accessed at: www.fws.gov/fisheries/aadap/calcein.htm

Please call us if you would like more information.