- 1952
-
Founder, Shigetoshi Okauchi, established KYORITSU CHEMICAL-CHECK Lab., as a sole proprietorship and started business to manufacture “pH Test Foils”, aiming to spread “simple water analyzer” that does not require complicated system, apparatus, or operation to use.
- 1959
-
Became incorporated.
- 1973
-
Released “Ion Selective Test Paper” and “PACKTEST”.
They were widely accepted among various industries and educational organization.
- 1974
-
Released high precision rapid water analyzer incorporating photoelectric photometer.
- 1977
-
Released Lambda-1000, which simplified photoelectric photometer with higher operability. Released Water Analysis Set for Total Cyanide, which has been widely used among industrial wastewater management industry.
- 1980
-
Kanji Minami became President (later he changed his family name to Okauchi)
- 2001
-
Instead of puncturing a hole to open the aperture of PACKTEST, pulling out the line is introduced.
- 2004
-
Relased portable single parameter water analyzer “Digital PACKTEST” to quantify PACKTEST reading.
- 2006
-
Digital Water Analyzer with multiple parameter “Lambda-9000” which came with improved functionality, operability, convenience, and color LCD screen is developed.
Digital PACKTEST-Multi with similar operating method as Lambda-9000 is developed.
- 2008
-
Joint development with GL Science Inc., PACKTEST Lead is released.
- 2011
-
Kanji Okauchi, was awarded for “2011 Technical Achievement Award” by The Japan Society for Analytical Chemistry, in Development of Advancement-oriented Simplified Analysis Method and Application Development to its Practical Analysis.
- 2013
-
Shuntaro Okauchi became President.
- 2017
-
Established factory in Yokohama.
- 2020
-
Main function of Head Office relocated to Midori-ku, Kanagawa (Head Office).
- 2021
-
Factory relocated to Midori-ku, Yokohama (Yokohama Creation Center).