混合泉
Sumatakyo Onsen Mixed SpringOperated by · 川根本町 観光交流課
Mixed source
Sampled at mixing tank
黄
Sulfur
Classification
Bicarbonate spring
A blended source classified as a simple sulfur spring. The water is almost colorless and clear, carrying the characteristic faint rotten-egg note of hydrogen sulfide. At pH 9.1 it is firmly alkaline, sitting near the top of the slippery 'beauty-water' range that leaves skin feeling smooth. It also runs notably high in metasilicic acid at 52.8 mg/kg, which adds a thin silica film for a softer after-feel.
pH
9.10
Alkaline
Source temperature
45.1°C
Hot
Tonicity
0.71g/kg
Hypotonic
Free H₂S
0.08mg/kg
Low
- Color
- almost colorless and transparent
- Taste
- faintly of hydrogen sulfide
- Odor
- faint hydrogen sulfide
Highlights
- Sulfur-rich
- High silica
- Top-decile alkaline
Analyzed Oct 11, 2023·一般財団法人静岡県生活科学検査センター·Cert no. 第 M23017 号