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Since its founding in 1943 our company has been working on the development and manufacture of electrochemistry and electrochemical analysis devices.

We are proud that the drip controlled automated titration devices that we developed as a world forerunner are still contributing to developments in modern automated titration devices.


Product history

The manufacturer of Japan’s first “drip controlled automated titration device ” in 1965 Some loyal customers began calling us the “HIRANUMA, the titration company.”
We conduct everything in-house from design and development to machine manufacturing, assembly, inspection, shipping, and repairs.
We have an established reputation for our development and manufacturing know-how, with many orders for OEM manufacturing as well.


The reason customers have chosen us

  • Certified as legacy in analytical and scientific instruments.

    The RAT-1 drip controlled automatic titration device we developed was assessed that it made great contributions to improved efficiency and precision in titration and certified as “[legacy in analytical and scientific instruments] aiming to pass down the valuable analytical technology and devices that contributed to the livelihoods, finances, education, and culture of the Japanese people to future generations as a cultural legacy.”

  • Reporting Auto Titrator RAT-1

Acquisition of ISO certification

By creating products which respond to our customers’ needs we strive to contrive systems that will satisfy all of our customers as well as company and our employees.
For this purpose we make proactive efforts in the acquisition of certifications established by the ISO (International Organization for Standardization).

  • ISO9001 certification
    Applicable standards ISO 9001:2015
    JIS Q 9001:2015
    Registration Certificate Number 11QR-1629
    Certificate Authority KHK-ISO Center
  • ISO13485 certification
    Applicable standards ISO 13485:2016
    JIS Q 13485:2018
    Registration authorization number 11MR-006
    Certificate Authority KHK-ISO Center


Our company developed the Japan’s first drip controlled automatic titration device.
Since then we have been known to our loyal customers as “HIRANUMA, the titration company” as we earned the top share in the field of titration devices. We also focus efforts on the development of various analytical instruments such as moisture measurement devices and organic carbon measurement devices to support our customers in their “analytical endeavors.


Name HIRANUMA Co., Ltd.
Representative KAZUYA HIRANUMA
Address 1739 Motoyoshida,Mito,Ibaraki,310-0836,JAPAN
Business Content Design and production of Electrical Chemical Analyzer Device.
Company Capital 25,000,000JPY
Number of Employees 104
Main Customer Hitachi High-Tech Science Co.,Ltd.
Hitachi High-Tech Fielding Co.,Ltd.
Central Kagaku Corp.
Minaris Medical Co., Ltd.
Member of organization Japan Analytical Instruments Manufacturers’ Association (JAIMA)
Japan Scientific Instruments Association (JSIA)
TOKYO Scientific Instrument Association (SIA TOKYO)
Mito Chamber of Commerce and Industry