DKK-TOA Corp engages in the manufacture and sale of analytical and various measuring instruments. It also manufactures and sells toxic and deleterious agents and reagents, and accepts contracts for instrumentation, electrical and telecommunications works. The company offers analytical instruments, such as laboratory analyzers, portable and handheld analyzers, and EOL products; and industrial, environmental, medical, and other measuring and analytical instruments. It also provides process analyzers; analyzers for water and waste water treatment, boiler water applications, and oil refineries; water quality analyzers/systems and ambient air/emission gas analyzers; and pH measurement and oxidation-reduction potential measurement products.