混合泉
Mixed SourceMixed source
Sampled at mixing tank
黄
Sulfur
Classification
Sodium Bicarbonate spring
A blend of five Umegashima wells, classified as a simple sulfur spring. At pH 9.4 it sits in the alkaline 'beauty-water' band — water that feels slippery on the skin. Mineralization is light (314 mg/kg total), but with 8.9 mg/kg HS⁻ plus thiosulfate and a trace of free H₂S the bath still carries the unmistakable sulfur-spring character: a microgreen-yellow tint and a faint rotten-egg note. A respectable 65.4 mg/kg of metasilicic acid leaves the skin noticeably smooth afterwards.
pH
9.40
Alkaline
Source temperature
38.6°C
Warm
Tonicity
0.31g/kg
Hypotonic
Free H₂S
0.10mg/kg
Low
- Color
- faintly green-yellow, transparent
- Taste
- weak hydrogen sulfide taste
- Odor
- weak hydrogen sulfide
Highlights
- Sulfur-rich
- Top-decile alkaline
- High silica
Analyzed Aug 19, 2019·一般財団法人静岡県生活科学検査センター·Cert no. 第M19014号