鶴見精機 Company Profile

We are pleased to announce that the cumulative production and shipment of the ocean observation instruments "XBT (eXpendable Bathy Thermograph)" and "XCTD (eXpendable Conductivity, Temperature and Depth) probes," manufactured and sold by Tsurumi Seiki Co., Ltd. (Location: Yokohama City, Kanagawa Prefecture; President: Kenji Yamamoto), reached one million units in July 2025. Since the start of production in 1960, the XBT and XCTD probes have been widely adopted by research and survey institutions around the world for over 60 years. They have been utilized for measuring seawater temperature, electrical conductivity, and more, significantly contributing to the research and analysis of climate change and marine resources. ~Towards further technological innovation and the realization of a sustainable environment~ Since its founding, Tsurumi Seiki has continued to pursue accurate water quality measurement technology, with the corporate philosophy of "measuring water in all fields and providing correct knowledge and insights." Through technical support for water quality survey activities, we are committed to contributing to environmental conservation. We will continue to strive for improvements in observation technology and the qualitative enhancement of data, dedicating ourselves to efforts aimed at achieving a sustainable environment.

We would like to express our sincere gratitude for your exceptional support of our products. We would like to inform you that the production and sales of the "XCTD-2N Probe" will be discontinued as of the orders received on March 31, 2024. We appreciate your understanding in this matter. We kindly ask that you use the recommended alternative product, the "XCTD-4N Probe." For more details, please check our corporate website (see the related link below).

We would like to express our sincere gratitude for your exceptional support of our products. We regret to inform you that we will be discontinuing the production and sale of the "TS-MK150N Observation Device." As a replacement product, we have prepared the "MK-200 Observation Device." We appreciate your understanding in this matter. You can find more details about the "MK-200 Observation Device" on our corporate website (see the related link below).