Dojindo Laboratories was founded by Dr. Keihei Ueno, a well-known researcher in chelating chemistry. Dojindo Laboratories was the first Japanese company to commercialize EDTA (ethylenediamine tetraacetic acid) in 1951. Since then, Dojindo Laboratories has been producing reagents to support the progress of scientific research. Dojindo Laboratories’ mission is to develop innovative tools for life science research. Dojindo Laboratories is ISO 9001 accredited and strives to contribute to the improvement of quality of life through scientific findings and the development of new medicines.

WST (water-soluble Tetrazolium) was developed by the DOJINDO Laboratories in the 1990s and is now used worldwide as one of the methods for cell proliferation assay. The CCK (Cell Counting Kit) and the CCK-8 (Cell Counting Kit-8) with improved sensitivity, which were commercialized using the WST method, are original products for which more than 5,000 papers have been published worldwide.