箱根大平台温泉組合供給温泉(台帳番号 温泉村 第87, 91, 115号混合)
Hakone Ohiradai Onsen Cooperative Supply (Onsenmura wells No. 87, 91, 115 blended)Operated by · 箱根大平台温泉組合
Mixed source
An alkaline simple thermal spring drawn at a hot 51.7 °C with a markedly alkaline pH of 9.1. The water is hypotonic and gentle on the body, with the slippery beauty-water feel that strong alkalinity gives. Metasilicic acid is generous at 121 mg/kg, leaving the kind of silica film that makes skin feel noticeably smoother afterward. Sourced from the Hakone Ohiradai cooperative blend (Onsenmura wells No. 87, 91, 115) and cooled to a 43–44 °C soaking range.
- Color
- colorless and clear
- Taste
- almost tasteless
- Odor
- odorless
- Top-decile hot
- High silica
- Top-decile alkaline
Analyzed Jul 5, 2023·神奈川県温泉地学研究所