混合泉
Mixed SourceMixed source
黄
Sulfur
- Color
- faintly green-yellow, transparent
- Taste
- weak hydrogen sulfide taste
- Odor
- weak hydrogen sulfide
Sodium Bicarbonate spring
pH 9.4AlkalineSulfur-richTop-decile alkalineHigh silica
Composition fingerprint0.3 g/kg dissolved · Hypotonic
Na⁺95
HCO₃⁻67
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Smooth skindry, rough skin
- Sensitive-skin cautionbroken or dry skin
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.
Sampled at mixing tank·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