OSG Human Water HU-90 Water Purifier Electrolyzed Hydrogen Water This is an electrolyzed hydrogen water machine from OSG Corporation. The display indicates that the filter life is nearing its end (see photo 3). There is some yellowing due to aging. It has been checked and maintained during the annual OSG cartridge replacements, so I think it is still usable. Raw water (for washing dishes, etc.) Hydrogen water (for everyday drinking) Purified water (for medicine and making baby formula) Acidic water (for washing your face) It's convenient because you can switch between them by pressing levers and buttons. It's easy to install, just attach it directly to the faucet. Hydrogen water server Hydrogen water generator Water purifier OSG