Company Info

Our Business


We are a manufacturer of analytical instruments and currently mainly engaged in the development, production and sale of analytical instruments for thermal desorption spectrometry (TDS).
TDS is a mass spectrometer that monitors gases generated from the surface of a material by heating the material in an ultra-high vacuum so that the impurities on the surface can be evaluated and the components of the material can be examined.
It is currently used for materials research, for the evaluation of manufacturing processes, and for quality control in many fields such as semiconductors, liquid crystals, organic EL, electricity, steel, automobiles, and ceramics.

In particular, our TDS keeps the background noise low because it can heat material samples independently, which enables high-sensitivity analysis of low-mass molecules such as hydrogen, water, and oxygen, molecules considered to be extremely difficult to analyze.
Such features are highly evaluated both in Japan and overseas.

In addition, by utilizing our unique desorption gas quantification program, we run the contracting business of analysis work for research institutes, and for companies, and support their research and quality control in various ways.

Chairman's Message

Chairman and Executive Director
Takashi Tsumura


ESCO began as a manufacturer of compact mass spectrometers in July 1978.

Since its founding, our management philosophy has been "To contribute to our customer's technical development and products by developing and providing products that can be applied to various fields such as technological innovation in advanced technology analysis, knowledge aggregation, the pursuit of high added value, and global resource environment conservation". The analyzers for wafer-generated gas, which were originally for the semiconductor industry, has been offered as TDS analyzers suitable for application in various industrial fields such as semiconductors, liquid crystals, organic EL, electricity, steel, automobiles, and ceramics in Japan and overseas.

As we are now joining the JTEC Corporation group, which is also a manufacturing company, in addition to aiming to expand our TDS business and improve the efficiency of manufacturing process, we would also like to create new products carrying the keywords of our specialty "vacuum, heat, and mass spectrometry" and JTEC Corporation's "automation, nanomeasurement, and nano-processing", and through our synergistic effects, contribute to society in other ways.

Company Outline

Company name ESCO, Ltd

Oak Bldg 3F, 1-3-12 Nishi Okubo, Musashino, Tokyo 180-0013, JAPAN
(5 minute walk from the JR Mitaka station)





Established July 1, 1978
Capital 50,000,000 yen
Content of Business 1) Manufacture and sale of physics and chemistry equipment and medical equipment
2) Import and sale of physics and chemistry equipment and medical equipment
3) All business activities incidental to the preceding
Fiscal term Ends March each year
Chief Executive Officer

Takashi Tsumura ( Chairman and Executive Director )
Hiroshi Takagi ( Chief Executive Officer )

Partner banks Sumitomo Mitsui Banking Corporation, Mitaka branch
The Tama Shinkin Bank, Musashino branch
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