Rion Co., Ltd.

Rion Co., Ltd. develops, manufactures, sells, and services particle counters, medical equipment, and environmental equipment in Japan. Its audiological equipment includes hearing instruments such as analog and digital BTE, trimmer digital BTE, in-the-ear ready and custom-made, and analog body aid instruments, as well as wireless and waterproof hearing instruments. The company also offers medical equipment including audiometers and OAE screeners, sound and vibration measuring instruments such as sound level meters, vibration meters, seismometers, frequency analyzers, microphones and recorders, and particle counters for air, liquid-borne, and viable particles. Its products are primarily used in environment-related administration, electronics, semiconductors, pharmaceutical, and food manufacturing industries. Formerly known as Kobayashi-Riken Seisakusho Ltd., it changed its name to Rion Co., Ltd. in 1960, was incorporated in 1944, and is headquartered in Kokubunji, Japan.