Yokogawa Eco-cycle Solutions

Yokogawa Eco-cycle Solutions (横河エコサイクルソリューションズ株式会社) is a Japanese technical service company that provides calibration of measuring instruments and validation support for the medical, pharmaceutical and food industries. It is a wholly owned subsidiary of Yokogawa Electric Corporation. The company was originally based in Nagoya, Aichi Prefecture, and became a wholly owned subsidiary of Yokogawa Electric in 2018, after which its head office was relocated to Sagamihara, Kanagawa Prefecture. The company's roots go back to May 1965, when it was established as Nagoya Keiki Seibi Co., Ltd. (名古屋計器整備株式会社). In March 1969 it signed a distributorship agreement with Hokushin Electric Works, one of the predecessor companies of Yokogawa Electric, and that agreement was terminated in February 1975. In June 1985 the company changed its trade name to NKS Corporation (エヌケイエス株式会社). It obtained ISO 9002 certification for calibration work in May 1996, said to be the first such certification in Japan, and opened a validation division in October 1999. In May 2002 it obtained ISO 9001 certification and expanded the certification scope of its validation work, again said to be a first in Japan, while withdrawing from maintenance work. In December 2018 it joined the Yokogawa Electric Group, and in August 2019 its JCSS calibration laboratory was registered as a JCSS accredited business. In April 2021 it opened the Kofu Calibration Center inside Yokogawa Manufacturing's Kofu office. On October 1, 2025, it changed its trade name to Yokogawa Eco-cycle Solutions Co., Ltd. The company positions itself as a specialist in calibration and validation, certified under ISO 9001 for "calibration of measuring instruments and measuring devices" and "qualification evaluation of manufacturing facilities and equipment." Its services include on-site calibration, "marugoto" (whole-batch) calibration covering instruments regardless of manufacturer, validation support from plan preparation through actual work, nationwide service coverage, custom-made calibration, and combination (loop) calibration from display units to sensors. It is a JCSS accredited business in the three categories of length, temperature and torque, and its JCSS calibration laboratory is accredited under ISO/IEC 17025 with international MRA recognition. It also offers JCSS calibration, customized education programs, procedure-document support consulting, and study content on calibration, validation, measuring instruments and related standards. Yokogawa Electric has stated a management policy of strengthening and expanding its life innovation business, and acquired the company to strengthen solutions in the medical and food fields. Although the company joined the Yokogawa Electric Group in 2018, it had previously been a distributor for Hokushin Electric Works, one of Yokogawa Electric's parent companies, in the 1970s, so the relationship was revived after about 45 years.

The company was established in May 1965 as Nagoya Keiki Seibi Co., Ltd. (名古屋計器整備株式会社) in Nagoya, Aichi Prefecture. In March 1969 it signed a distributorship agreement with Hokushin Electric Works, one of the predecessor companies of Yokogawa Electric. That agreement was terminated in February 1975. In June 1985 the company changed its trade name to NKS Corporation (エヌケイエス株式会社). In May 1996 it obtained ISO 9002 certification for calibration work, which was the first such certification in Japan. In October 1999 it opened a validation division. In May 2002 it obtained ISO 9001 certification and expanded the certification scope of its validation work, again said to be a first in Japan, while withdrawing from maintenance work. In December 2018 it joined the Yokogawa Electric Group as a wholly owned subsidiary, and its head office was relocated from Nagoya to Sagamihara, Kanagawa Prefecture. In August 2019 its JCSS calibration laboratory was registered as a JCSS accredited business. In April 2021 it opened the Kofu Calibration Center inside Yokogawa Manufacturing's Kofu office. On October 1, 2025, it changed its trade name to Yokogawa Eco-cycle Solutions Co., Ltd. Yokogawa Electric had a management policy of strengthening and expanding its life innovation business, and acquired the company to strengthen solutions in the medical and food fields. Although the company joined the Yokogawa Electric Group in 2018, it had previously been a distributor for Hokushin Electric Works, one of Yokogawa Electric's parent companies, in the 1970s, so the relationship was revived after about 45 years.

• 2025

  Changed trade name to Yokogawa Eco-cycle Solutions Co., Ltd.

• 2021

  Opened the Kofu Calibration Center inside Yokogawa Manufacturing's Kofu office.

• 2019

  JCSS calibration laboratory registered as a JCSS accredited business.

• 2018

  Joined the Yokogawa Electric Group as a wholly owned subsidiary; head office relocated to Sagamihara, Kanagawa Prefecture.

• 2002

  Obtained ISO 9001 certification and expanded the certification scope of validation work (first in Japan); withdrew from maintenance work.

• 1999

  Opened a validation division.

• 1996

  Obtained ISO 9002 certification for calibration work, the first such certification in Japan.

• 1985

  Changed trade name to NKS Corporation (エヌケイエス株式会社).

• 1975

  Terminated the distributorship agreement with Hokushin Electric Works.

• 1969

  Signed a distributorship agreement with Hokushin Electric Works, one of the predecessor companies of Yokogawa Electric.

• 1965

  Established as Nagoya Keiki Seibi Co., Ltd. (名古屋計器整備株式会社).

A specialist company that continuously evolves calibration and validation, providing objective accuracy in measurement.

• JCSS calibration

  Calibration services accredited under JCSS in the three categories of length, temperature and torque, with international MRA recognition.

• Validation support

  Support for validation requirements such as GMP ministerial ordinances, from plan preparation through actual work.

• On-site calibration

  Calibration performed at the customer's designated location, allowing instruments to be used immediately after calibration.

• Whole-batch (marugoto) calibration

  Batch handling of instruments regardless of manufacturer, reducing cost and management overhead.

• Custom-made calibration

  Calibration content customized to customer requirements such as measurement points and judgment accuracy.

• Combination (loop) calibration

  Calibration of combinations from display units to sensors, confirming accuracy close to actual usage conditions.

• Customized education programs

  Education programs tailored to customer needs.

• Procedure-document support consulting

  Consulting support for procedure documents.

1. 1横河エコサイクルソリューションズ株式会社yokogawa.com
2. 2JCSS校正｜横河エコサイクルソリューションズ株式会社yokogawa.com
3. 3計測器の基礎知識・原理｜お役立ち情報｜横河エコサイクルソリューションズ株式会社yokogawa.com
4. 4Yokogawa Eco-cycle Solutionswikidata.org
5. 5横河エコサイクルソリューションズja.wikipedia.org