嶽温泉
Dake OnsenSampled at wellhead
塩
Chloride
+ Sulfate
Classification
Sodium Chloride-Sulfate spring
A sodium-led chloride-sulfate spring emerging at a striking 68.6 °C — among Japan's hotter natural sources. Weakly alkaline (pH 7.7) and softly mineralised at 1,307 mg/kg, it bathes clear and colourless with a faint salty tang and a whisper of H₂S on the nose. The chloride backbone carries heat well, while the sulfate sub-type adds a quiet sense of body.
pH
7.70
Weakly alkaline
Source temperature
68.6°C
Hot
Tonicity
1.31g/kg
Hypotonic
Flow rate
131L/min
Typical
Free CO₂
21mg/kg
Low
- Color
- colorless and transparent
- Taste
- slightly salty
- Odor
- faint hydrogen sulfide
Highlights
- Top-decile hot
Analyzed Apr 25, 2013·環境保全株式会社·Cert no. 13F0375