大湯
Oyu SpringOperated by · 一般財団法人 野沢会
- Color
- colorless and clear
- Taste
- sulfurous
- Odor
- moderate hydrogen sulfide
Sodium-Calcium Sulfate-Chloride spring
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Sulfate SO₄²⁻
- "gypsum / Glauber's salt" — vessels and wound healing.
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A simple sulfur spring: colorless and clear, yet carrying a mid-strength rotten-egg note of hydrogen sulfide and a distinct sulfurous taste. Hydrogen sulfide ion reaches 31 mg/kg — many times the threshold that earns a spring its sulfur designation — with a little more arriving as free H₂S. The water is weakly alkaline and soft on the skin, and at 0.77 g/kg of dissolved solids it stays light rather than assertive; 98.5 mg/kg of metasilicic acid leaves the thin silica film that puts it in Japan's beauty-water family. The sample was drawn not at the wellhead but at the distribution box that splits the water out toward the baths.
Sampled at delivery pipe·Analyzed Jun 28, 2016·環境未来株式会社 総合検査センター·Cert no. 1601934-001
