ugo Inc. (Yugo, Headquarters: Chiyoda-ku, Tokyo, CEO: Ken Matsui, hereinafter referred to as ugo), which promotes the social implementation of physical AI, announces that it has quantitatively evaluated the dust emission from its inspection robots "ugo mini" and "ugo Ex" and confirmed that ugo mini is at a level suitable for operation in an ISO cleanroom standard Class 4 environment, and ugo Ex is suitable for a Class 6 equivalent environment. This evaluation was conducted to provide objective criteria for determining operational feasibility to facilities considering the introduction of inspection robots into cleanrooms. ■ Background Inspection tasks in cleanrooms face challenges such as the burden of entering and exiting due to wearing cleanroom suits, physical strain specific to the environment, and the complexity of record-keeping due to the prohibition of bringing in paper documents. Consequently, the need for inspection robots controlled remotely and by AI is increasing. On the other hand, cleanroom cleanliness is stipulated by ISO 14644-1, and it is necessary to confirm in advance that the dust emission from equipment brought in meets the standard. For inspection robots, sufficient quantitative data on dust emission during operation has not been accumulated, leading to a lack of information for decision-making during introduction considerations. To support facilities considering the introduction of inspection robots into cleanrooms, ugo has quantitatively evaluated the dust emission of "ugo mini" and "ugo Ex" using a method compliant with JIS B 9926:1991, and confirmed their suitability for each ISO class. ■ Evaluation Method Following JIS B 9926:1991 (Method for measuring dust emission from cleanroom equipment), a simple booth for dust emission measurement was constructed using a variable-speed FFU installed in a cleanroom, and the amount of particles generated during the operation of each robot was measured.* *Measurement condition details: Air velocity 0.37